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Addressed the concerns.
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‎README.md‎

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# How-to-implement-NumericUpDown-inside-SfDataGrid-using-Custom-Column-support.
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How to implement NumericUpDown inside SfDataGrid using Custom Column support.
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# How to implement NumericUpDown inside SfDataGrid using Custom Column support.
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To achieve the requirement of implementing a NumericUpDown inside an SfDataGrid column, follow these steps:
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**Step 1** : Create a custom column by overriding a new class derived from the GridColumn class.
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```C#
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public class NumericUpDownExtColumn : GridColumn
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{
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public NumericUpDownExtColumn()
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{
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SetCellType("NumericUpDown");
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}
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}
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```
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**Step 2** : After creating a custom column, you need to create a renderer for the custom column. You can create a custom renderer by deriving from the GridCellRendererBase class.
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**Step 3** : In the OnRender method, you can create a NumericUpDown control. Within this method, initialize the properties for the NumericUpDown control, and finally, add the declared control into the DataGrid TableControl.
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You can add any other controls in the OnRender method by following this procedure based on your needs.
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```C#
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public class NumericUpDownCellRenderer : GridCellRendererBase
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{
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public NumericUpDownCellRenderer(SfDataGrid dataGrid)
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{
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DataGrid = dataGrid;
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IsInEditing = false;
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}
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protected SfDataGrid DataGrid { get; set; }
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protected override void OnRender(Graphics graphics, Rectangle cellRect, string cellValue, CellStyleInfo style, DataColumnBase column, RowColumnIndex rowColumnIndex)
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{
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var NumericUpDownExtControl = new NumericUpDown();
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NumericUpDownExtControl.TextAlign = System.Windows.Forms.HorizontalAlignment.Left;
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NumericUpDownExtControl.Value =Convert.ToDecimal(cellValue);
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NumericUpDownExtControl.Increment = new decimal(new int[] { 5, 0, 0, 0 });
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NumericUpDownExtControl.Minimum = new decimal(new int[] { 0, 0, 0, 0 });
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NumericUpDownExtControl.Maximum = new decimal(new int[] { 40, 0, 0, 0 });
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NumericUpDownExtControl.Font = new Font(NumericUpDownExtControl.Font.FontFamily, 14);
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NumericUpDownExtControl.Text = cellValue ?? string.Empty;
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NumericUpDownExtControl.Size = cellRect.Size;
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NumericUpDownExtControl.Location = cellRect.Location;
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DataGrid.GetTopLevelParentDataGrid().TableControl.Controls.Add(NumericUpDownExtControl);
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}
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}
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```
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**Step 4** : Then you can add the previously created custom renderer to the SfDataGrid.CellRenderers collection.
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```C#
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public Form1()
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{
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InitializeComponent();
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this.sfDataGrid1.CellRenderers.Add("NumericUpDown", new NumericUpDownCellRenderer(sfDataGrid1));
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}
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```
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**Step 5** : At last, finally, you can define the custom column in SfDataGrid.
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```C#
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public Form1()
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{
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InitializeComponent();
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this.sfDataGrid1.Columns.Add(new NumericUpDownExtColumn() { MappingName = "NumericUpDown", HeaderText = "NumericUpDown"});
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}
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```
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By following the above code, the output image is as referenced below.
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![NumericUpDown_Image.png](https://support.syncfusion.com/kb/agent/attachment/article/15707/inline?token=eyJhbGciOiJodHRwOi8vd3d3LnczLm9yZy8yMDAxLzA0L3htbGRzaWctbW9yZSNobWFjLXNoYTI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjIwNzUxIiwib3JnaWQiOiIzIiwiaXNzIjoic3VwcG9ydC5zeW5jZnVzaW9uLmNvbSJ9.yG2J64WnfEu5VJbuOnqjv_4Po3p_Ce82_OS9tDfBzuw)
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Take a moment to peruse the [Winforms - DataGrid Custom Column Support UG Documentation](https://help.syncfusion.com/windowsforms/datagrid/columntypes#custom-column-support), to learn more about Custom Column support with examples.

‎SfDataGridDemo/SfDatagridDemo/Renderer/NumericUpDownCellRenderer.cs‎

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protected override void OnRender(Graphics graphics, Rectangle cellRect, string cellValue, CellStyleInfo style, DataColumnBase column, RowColumnIndex rowColumnIndex)
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{
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var NumericUpDownExtControl = new NumericUpDownExtControl();
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var NumericUpDownExtControl = new NumericUpDown();
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NumericUpDownExtControl.TextAlign = System.Windows.Forms.HorizontalAlignment.Left;
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NumericUpDownExtControl.Value =Convert.ToDecimal(cellValue);
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NumericUpDownExtControl.Increment = new decimal(new int[] { 5, 0, 0, 0 });

‎SfDataGridDemo/SfDatagridDemo/Renderer/NumericUpDownExt.cs‎

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This file was deleted.

‎SfDataGridDemo/SfDatagridDemo/SfDatagridDemo.csproj‎

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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="Syncfusion.Core.WinForms, Version=25.1400.38.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.Core.WinForms.25.1.38\lib\net40\Syncfusion.Core.WinForms.dll</HintPath>
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<Reference Include="Syncfusion.Core.WinForms, Version= *, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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</Reference>
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<Reference Include="Syncfusion.Data.WinForms, Version=25.1400.38.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.Data.WinForms.25.1.38\lib\net40\Syncfusion.Data.WinForms.dll</HintPath>
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<Reference Include="Syncfusion.Core.WinForms, Version=25.1462.39.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.Core.WinForms.25.1.39\lib\net462\Syncfusion.Core.WinForms.dll</HintPath>
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</Reference>
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<Reference Include="Syncfusion.DataSource.WinForms, Version=25.1400.38.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.DataSource.WinForms.25.1.38\lib\net40\Syncfusion.DataSource.WinForms.dll</HintPath>
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<Reference Include="Syncfusion.Data.WinForms, Version=25.1462.39.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.Data.WinForms.25.1.39\lib\net462\Syncfusion.Data.WinForms.dll</HintPath>
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</Reference>
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<Reference Include="Syncfusion.GridCommon.WinForms, Version=25.1400.38.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.GridCommon.WinForms.25.1.38\lib\net40\Syncfusion.GridCommon.WinForms.dll</HintPath>
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<Reference Include="Syncfusion.DataSource.WinForms, Version=25.1462.39.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.DataSource.WinForms.25.1.39\lib\net462\Syncfusion.DataSource.WinForms.dll</HintPath>
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</Reference>
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<Reference Include="Syncfusion.Licensing, Version=25.1450.38.0, Culture=neutral, PublicKeyToken=632609b4d040f6b4, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.Licensing.25.1.38\lib\net45\Syncfusion.Licensing.dll</HintPath>
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<Reference Include="Syncfusion.GridCommon.WinForms, Version=25.1462.39.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.GridCommon.WinForms.25.1.39\lib\net462\Syncfusion.GridCommon.WinForms.dll</HintPath>
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</Reference>
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<Reference Include="Syncfusion.SfDataGrid.WinForms, Version=25.1400.38.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.SfDataGrid.WinForms.25.1.38\lib\net40\Syncfusion.SfDataGrid.WinForms.dll</HintPath>
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<Reference Include="Syncfusion.Licensing, Version=25.1462.39.0, Culture=neutral, PublicKeyToken=632609b4d040f6b4, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.Licensing.25.1.39\lib\net462\Syncfusion.Licensing.dll</HintPath>
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</Reference>
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<Reference Include="Syncfusion.SfInput.WinForms, Version=25.1400.38.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.SfInput.WinForms.25.1.38\lib\net40\Syncfusion.SfInput.WinForms.dll</HintPath>
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<Reference Include="Syncfusion.SfDataGrid.WinForms, Version=25.1462.39.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.SfDataGrid.WinForms.25.1.39\lib\net462\Syncfusion.SfDataGrid.WinForms.dll</HintPath>
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</Reference>
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<Reference Include="Syncfusion.SfListView.WinForms, Version=25.1400.38.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.SfListView.WinForms.25.1.38\lib\net40\Syncfusion.SfListView.WinForms.dll</HintPath>
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<Reference Include="Syncfusion.SfInput.WinForms, Version=25.1462.39.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.SfInput.WinForms.25.1.39\lib\net462\Syncfusion.SfInput.WinForms.dll</HintPath>
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</Reference>
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<Reference Include="Syncfusion.Shared.Base, Version=25.1400.38.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.Shared.Base.25.1.38\lib\net40\Syncfusion.Shared.Base.dll</HintPath>
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<Reference Include="Syncfusion.SfListView.WinForms, Version=25.1462.39.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.SfListView.WinForms.25.1.39\lib\net462\Syncfusion.SfListView.WinForms.dll</HintPath>
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</Reference>
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<Reference Include="Syncfusion.Shared.Base, Version=25.1462.39.0, Culture=neutral, PublicKeyToken=3d67ed1f87d44c89, processorArchitecture=MSIL">
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<HintPath>..\packages\Syncfusion.Shared.Base.25.1.39\lib\net462\Syncfusion.Shared.Base.dll</HintPath>
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</Reference>
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<Reference Include="System" />
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<Reference Include="System.ComponentModel.DataAnnotations" />
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<Compile Include="Program.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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<Compile Include="Renderer\NumericUpDownCellRenderer.cs" />
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<Compile Include="Renderer\NumericUpDownExt.cs">
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<SubType>Component</SubType>
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</Compile>
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<Compile Include="Renderer\NumericUpDownExtColumn.cs" />
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<Compile Include="ViewModel.cs" />
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<EmbeddedResource Include="Form1.resx">

‎SfDataGridDemo/SfDatagridDemo/SfDatagridDemo.csproj.user‎

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‎SfDataGridDemo/SfDatagridDemo/packages.config‎

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<?xml version="1.0" encoding="utf-8"?>
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<packages>
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<package id="Syncfusion.Core.WinForms" version="25.1.38" targetFramework="net46" requireReinstallation="true" />
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<package id="Syncfusion.Data.WinForms" version="25.1.38" targetFramework="net46" requireReinstallation="true" />
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<package id="Syncfusion.DataSource.WinForms" version="25.1.38" targetFramework="net46" requireReinstallation="true" />
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<package id="Syncfusion.GridCommon.WinForms" version="25.1.38" targetFramework="net46" requireReinstallation="true" />
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<package id="Syncfusion.Licensing" version="25.1.38" targetFramework="net46" requireReinstallation="true" />
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<package id="Syncfusion.SfDataGrid.WinForms" version="25.1.38" targetFramework="net46" requireReinstallation="true" />
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<package id="Syncfusion.SfInput.WinForms" version="25.1.38" targetFramework="net46" requireReinstallation="true" />
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<package id="Syncfusion.SfListView.WinForms" version="25.1.38" targetFramework="net46" requireReinstallation="true" />
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<package id="Syncfusion.Shared.Base" version="25.1.38" targetFramework="net46" requireReinstallation="true" />
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<package id="Syncfusion.Core.WinForms" version="25.1.39" targetFramework="net462" />
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<package id="Syncfusion.Data.WinForms" version="25.1.39" targetFramework="net462" />
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<package id="Syncfusion.DataSource.WinForms" version="25.1.39" targetFramework="net462" />
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<package id="Syncfusion.GridCommon.WinForms" version="25.1.39" targetFramework="net462" />
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<package id="Syncfusion.Licensing" version="25.1.39" targetFramework="net462" />
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<package id="Syncfusion.SfDataGrid.WinForms" version="25.1.39" targetFramework="net462" />
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<package id="Syncfusion.SfInput.WinForms" version="25.1.39" targetFramework="net462" />
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<package id="Syncfusion.SfListView.WinForms" version="25.1.39" targetFramework="net462" />
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<package id="Syncfusion.Shared.Base" version="25.1.39" targetFramework="net462" />
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</packages>

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