How to bind the GridColumn.IsHidden property to property in ViewModel?

2 mins read

The column definitions of the DataGrid are not part of the SfDataGrid visual tree, so you can not bind SfDataGrid DataContext with GridColumn.

You can overcome this problem by defining ViewModel (DataContext) inside Resources and you can bind ViewModel to GridColumns by using StaticResource binding as in the following code example.

XAML

    <Window.Resources>
        <local: ViewModel x:Key="viewModel"/>
    </Window.Resources>
        <syncfusion:SfDataGrid x:Name="datagrid"
                               AllowSorting="True"
                               AutoGenerateColumns="False"
                               ColumnSizer="Star"
                               ItemsSource="{Binding GDCSource}" >
            <syncfusion:SfDataGrid.Columns>
                <syncfusion:GridTextColumn 
                                      IsHidden="{Binding Hide,                 
                                      Source={StaticResource viewModel}}" 
                                      MappingName="EmployeeDesignation" />
                <syncfusion:GridTextColumn MappingName="EmployeeArea"/>
                <syncfusion:GridTextColumn MappingName="EmployeeName"/>
                <syncfusion:GridTextColumn MappingName="EmployeeSalary"/>
                <syncfusion:GridDateTimeColumn MappingName="EmployeeDate"  />
                <syncfusion:GridTextColumn MappingName="EmployeeGender"/>
            </syncfusion:SfDataGrid.Columns>
        </syncfusion:SfDataGrid>

Here ViewModel is given as Windows Resources to access it as StaticResource for GridColumn Properties.

Another method is by using FindAncestor. In this method, ViewModel is defined as DataContext for MainWindow. You can bind MainWindow DataContext properties to GridColumns using RelativeResource. This FindAncestor is supported in WPF only.

Refer the following code example.

    <Window.DataContext>
        <local:ViewModel />
    </Window.DataContext>
    <Window.Resources>
        <local:ViewModel x:Key="viewModel"/>
    </Window.Resources>
        <syncfusion:SfDataGrid x:Name="datagrid"
                               AllowSorting="True"
                               AutoGenerateColumns="False"
                               ColumnSizer="Star"
                               ItemsSource="{Binding GDCSource}" >
            <syncfusion:SfDataGrid.Columns>
                <syncfusion:GridTextColumn 
                    IsHidden="{Binding Hide, 
                    Source={StaticResource viewModel}}" 
                    MappingName="EmployeeDesignation" />
            <syncfusion:GridTextColumn IsHidden="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type local:MainWindow}},Path=DataContext.Hide}" MappingName="EmployeeArea"/>
                <syncfusion:GridTextColumn MappingName="EmployeeName"/>
                <syncfusion:GridTextColumn MappingName="EmployeeSalary"/>
                <syncfusion:GridDateTimeColumn MappingName="EmployeeDate"  />
                <syncfusion:GridTextColumn MappingName="EmployeeGender"/>
            </syncfusion:SfDataGrid.Columns>
        </syncfusion:SfDataGrid>
</Window>

Here Hide property is defined in ViewModel. So you can set ancestor type as MainWindow and path as DataContext.Hide. IsHidden property value is derived from ViewModel through MainWindow DataContext.

Sample Links:

WPF

UWP

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