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Merge pull request #1 from SyncfusionExamples/nullValues
How to set null value for any cell in the DataGridNumericColumn in .NET MAUI DataGrid?
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‎README.md‎

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# How-to-set-null-value-for-any-cell-in-the-DataGridNumericColumn-in-.NET-MAUI-DataGrid-
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This demo shows how to set null value for any cell in the DataGridNumericColumn in .NET MAUI DataGrid ?
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# How to set null value for any cell in the DataGridNumericColumn in .NET MAUI DataGrid?
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In this article, we will show you how to set null value for any cell in the DataGridNumericColumn in [.Net Maui DataGrid](https://www.syncfusion.com/maui-controls/maui-datagrid).
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## xaml
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The code below demonstrates how to set a null value for any cell in the DataGridNumericColumn within a DataGrid. The [DataGridNumericColumn.AllowNullValue](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.DataGrid.DataGridNumericColumn.html#Syncfusion_Maui_DataGrid_DataGridNumericColumn_AllowNullValue) property, when set to true, allows you to commit a null value to the respective cell during the end edit.
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```
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<ContentPage.BindingContext>
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<local:EmployeeViewModel x:Name="viewModel"/>
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</ContentPage.BindingContext>
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<syncfusion:SfDataGrid x:Name="sfGrid"
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SelectionMode="Multiple"
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NavigationMode="Cell"
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GridLinesVisibility="Both"
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AllowEditing="True"
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AutoGenerateColumnsMode="None"
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HeaderGridLinesVisibility="Both"
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ColumnWidthMode="Auto"
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ItemsSource="{Binding Employees}">
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<syncfusion:SfDataGrid.Columns>
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<syncfusion:DataGridNumericColumn MappingName="EmployeeID"
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Format="#"
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HeaderText="Employee ID"
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AllowNullValue="True" />
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<syncfusion:DataGridTextColumn MappingName="Name"
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HeaderText="Employee Name" />
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<syncfusion:DataGridTextColumn MappingName="Title"
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HeaderText="Designation" />
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<syncfusion:DataGridDateColumn MappingName="HireDate"
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HeaderText="Hire Date" />
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</syncfusion:SfDataGrid.Columns>
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</syncfusion:SfDataGrid>
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</syncfusion:SfDataGrid>
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```
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**Note**
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The NumericColumn property must be of a nullable type for the AllowNullValue property to function correctly.
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![NullValues.gif](https://support.syncfusion.com/kb/agent/attachment/inline?token=eyJhbGciOiJodHRwOi8vd3d3LnczLm9yZy8yMDAxLzA0L3htbGRzaWctbW9yZSNobWFjLXNoYTI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjMzNDI1Iiwib3JnaWQiOiIzIiwiaXNzIjoic3VwcG9ydC5zeW5jZnVzaW9uLmNvbSJ9.ACFqPuPBElAeIRTjYb9dgLzVzuoPeLlQV3oRAdHTrrs)
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[View sample in GitHub](https://github.com/SyncfusionExamples/How-to-set-null-value-for-any-cell-in-the-DataGridNumericColumn-in-.NET-MAUI-DataGrid)
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Take a moment to explore this [documentation](https://help.syncfusion.com/maui/datagrid/overview), where you can find more information about Syncfusion .NET MAUI DataGrid (SfDataGrid) with code examples. Please refer to this [link](https://www.syncfusion.com/maui-controls/maui-datagrid) to learn about the essential features of Syncfusion .NET MAUI DataGrid (SfDataGrid).
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##### Conclusion
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I hope you enjoyed learning about how to set a null value for any cell in the DataGridNumericColumn in .NET MAUI DataGrid (SfDataGrid).
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You can refer to our [.NET MAUI DataGrid’s feature tour](https://www.syncfusion.com/maui-controls/maui-datagrid) page to learn about its other groundbreaking feature representations. You can also explore our [.NET MAUI DataGrid Documentation](https://help.syncfusion.com/maui/datagrid/getting-started) to understand how to present and manipulate data.
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For current customers, you can check out our .NET MAUI components on the [License and Downloads](https://www.syncfusion.com/sales/teamlicense) page. If you are new to Syncfusion, you can try our 30-day [free trial](https://www.syncfusion.com/downloads/maui) to explore our .NET MAUI DataGrid and other .NET MAUI components.
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If you have any queries or require clarifications, please let us know in the comments below. You can also contact us through our [support forums](https://www.syncfusion.com/forums), [Direct-Trac](https://support.syncfusion.com/create) or [feedback portal](https://www.syncfusion.com/feedback/maui?control=sfdatagrid), or the feedback portal. We are always happy to assist you!

‎SfDataGridSample/SfDataGridSample.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.12.35506.116 d17.12
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SfDataGridSample", "SfDataGridSample\SfDataGridSample.csproj", "{EEB0310E-49AF-4663-87C2-E585EEFE9E5E}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{EEB0310E-49AF-4663-87C2-E585EEFE9E5E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{EEB0310E-49AF-4663-87C2-E585EEFE9E5E}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{EEB0310E-49AF-4663-87C2-E585EEFE9E5E}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{EEB0310E-49AF-4663-87C2-E585EEFE9E5E}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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EndGlobal

‎SfDataGridSample/SfDataGridSample/App.xaml‎

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<?xml version = "1.0" encoding = "UTF-8" ?>
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<Application xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
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xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
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xmlns:local="clr-namespace:SfDataGridSample"
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x:Class="SfDataGridSample.App">
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<Application.Resources>
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<ResourceDictionary>
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<ResourceDictionary.MergedDictionaries>
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<ResourceDictionary Source="Resources/Styles/Colors.xaml" />
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<ResourceDictionary Source="Resources/Styles/Styles.xaml" />
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</ResourceDictionary.MergedDictionaries>
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</ResourceDictionary>
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</Application.Resources>
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</Application>

‎SfDataGridSample/SfDataGridSample/App.xaml.cs‎

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namespace SfDataGridSample
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{
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public partial class App : Application
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{
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public App()
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{
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InitializeComponent();
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}
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protected override Window CreateWindow(IActivationState? activationState)
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{
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return new Window(new AppShell());
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}
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}
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}

‎SfDataGridSample/SfDataGridSample/AppShell.xaml‎

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<?xml version="1.0" encoding="UTF-8" ?>
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<Shell
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x:Class="SfDataGridSample.AppShell"
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xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
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xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
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xmlns:local="clr-namespace:SfDataGridSample"
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Shell.FlyoutBehavior="Flyout"
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Title="SfDataGridSample">
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<ShellContent
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Title="Home"
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ContentTemplate="{DataTemplate local:MainPage}"
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Route="MainPage" />
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</Shell>

‎SfDataGridSample/SfDataGridSample/AppShell.xaml.cs‎

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namespace SfDataGridSample
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{
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public partial class AppShell : Shell
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{
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public AppShell()
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{
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InitializeComponent();
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}
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}
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}

‎SfDataGridSample/SfDataGridSample/MainPage.xaml‎

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<?xml version="1.0" encoding="utf-8" ?>
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<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
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xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
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xmlns:syncfusion="clr-namespace:Syncfusion.Maui.DataGrid;assembly=Syncfusion.Maui.DataGrid"
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xmlns:local="clr-namespace:SfDataGridSample"
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x:Class="SfDataGridSample.MainPage">
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<ContentPage.BindingContext>
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<local:EmployeeViewModel x:Name="viewModel" />
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</ContentPage.BindingContext>
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<syncfusion:SfDataGrid x:Name="sfGrid"
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SelectionMode="Multiple"
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NavigationMode="Cell"
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GridLinesVisibility="Both"
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AllowEditing="True"
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AutoGenerateColumnsMode="None"
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HeaderGridLinesVisibility="Both"
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ColumnWidthMode="Auto"
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ItemsSource="{Binding Employees}">
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<syncfusion:SfDataGrid.Columns>
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<syncfusion:DataGridNumericColumn MappingName="EmployeeID"
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Format="#"
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HeaderText="Employee ID"
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AllowNullValue="True" />
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<syncfusion:DataGridTextColumn MappingName="Name"
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HeaderText="Employee Name" />
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<syncfusion:DataGridTextColumn MappingName="Title"
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HeaderText="Designation" />
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<syncfusion:DataGridDateColumn MappingName="HireDate"
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HeaderText="Hire Date" />
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</syncfusion:SfDataGrid.Columns>
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</syncfusion:SfDataGrid>
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</ContentPage>

‎SfDataGridSample/SfDataGridSample/MainPage.xaml.cs‎

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namespace SfDataGridSample
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{
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public partial class MainPage : ContentPage
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{
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public MainPage()
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{
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InitializeComponent();
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}
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}
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}

‎SfDataGridSample/SfDataGridSample/MauiProgram.cs‎

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using Microsoft.Extensions.Logging;
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using Syncfusion.Maui.Core.Hosting;
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namespace SfDataGridSample
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{
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public static class MauiProgram
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{
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public static MauiApp CreateMauiApp()
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{
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var builder = MauiApp.CreateBuilder();
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builder
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.UseMauiApp<App>()
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.ConfigureSyncfusionCore()
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.ConfigureFonts(fonts =>
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{
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fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
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fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
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});
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#if DEBUG
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builder.Logging.AddDebug();
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#endif
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return builder.Build();
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}
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}
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}

‎SfDataGridSample/SfDataGridSample/Model/Employee.cs‎

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using System.ComponentModel;
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namespace SfDataGridSample
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{
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public class Employee : INotifyPropertyChanged
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{
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private int? _employeeID;
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private string? _name;
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private long _iDNumber;
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private int _contactID;
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private string? _loginID;
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private int _managerID;
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private string? _title;
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private DateTime _birthDate;
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private string? _maritalStatus;
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private string? _gender;
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private DateTime _hireDate;
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private int _sickLeaveHours;
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private double _salary;
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private bool _employeeStatus;
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private int _rating;
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public int? EmployeeID
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{
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get { return _employeeID; }
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set
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{
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_employeeID = value;
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OnPropertyChanged(nameof(EmployeeID));
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}
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}
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public string? Name
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{
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get { return _name; }
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set
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{
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_name = value;
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OnPropertyChanged(nameof(Name));
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}
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}
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public long IDNumber
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{
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get { return _iDNumber; }
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set
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{
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_iDNumber = value;
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OnPropertyChanged(nameof(IDNumber));
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}
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}
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public string? Title
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{
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get { return _title; }
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set
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{
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_title = value;
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OnPropertyChanged(nameof(Title));
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}
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}
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public int ContactID
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{
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get { return _contactID; }
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set
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{
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_contactID = value;
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OnPropertyChanged(nameof(ContactID));
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}
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}
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public DateTime BirthDate
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{
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get { return _birthDate; }
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set
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{
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_birthDate = value;
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OnPropertyChanged(nameof(BirthDate));
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}
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}
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public string? MaritalStatus
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{
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get { return _maritalStatus; }
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set
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{
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_maritalStatus = value;
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OnPropertyChanged(nameof(MaritalStatus));
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}
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}
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public string? Gender
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{
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get { return _gender; }
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set
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{
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_gender = value;
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OnPropertyChanged(nameof(Gender));
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}
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}
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public DateTime HireDate
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{
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get { return _hireDate; }
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set
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{
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_hireDate = value;
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OnPropertyChanged(nameof(HireDate));
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}
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}
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public int SickLeaveHours
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{
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get { return _sickLeaveHours; }
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set
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{
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_sickLeaveHours = value;
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OnPropertyChanged(nameof(SickLeaveHours));
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}
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}
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public double Salary
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{
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get { return _salary; }
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set
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{
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_salary = value;
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OnPropertyChanged(nameof(Salary));
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}
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}
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public string? LoginID
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{
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get { return _loginID; }
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set
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{
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_loginID = value;
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OnPropertyChanged(nameof(LoginID));
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}
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}
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public int ManagerID
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{
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get { return _managerID; }
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set
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{
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_managerID = value;
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OnPropertyChanged(nameof(ManagerID));
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}
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}
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public bool EmployeeStatus
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{
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get { return _employeeStatus; }
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set
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{
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_employeeStatus = value;
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OnPropertyChanged(nameof(EmployeeStatus));
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}
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}
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public int Rating
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{
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get { return _rating; }
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set
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{
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_rating = value;
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OnPropertyChanged(nameof(Rating));
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}
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}
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public event PropertyChangedEventHandler? PropertyChanged;
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public void OnPropertyChanged(string name)
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{
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if (this.PropertyChanged != null)
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this.PropertyChanged(this, new PropertyChangedEventArgs(name));
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}
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}
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}

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