<dxg:GridControl Name="gridControl_Plan" AutoPopulateColumns="False" 
                         DataSource="{Binding ElementName=z_plan_nameDomainDataSource, Path=Data}" 
                         ShowBorder="False" Height="352" VerticalAlignment="Bottom" Grid.ColumnSpan="2">
            
           <dxg:GridControl.View>
                <dxg:TableView Name="Control_Plan" AutoWidth="True" 
                               ShowGroupPanel="False" ScrollingMode="Smart" 
                               AllowColumnFiltering="True" 
                               AllowFilterEditor="True" TabNavigation="Once" Margin="0,0,0,0"
                               >
                </dxg:TableView>
            </dxg:GridControl.View>
          
            <dxg:GridControl.Columns>
               <dxg:GridColumn FieldName="kod_speciality" 
                               DataContext="{Binding ElementName=z_plan_nameDomainDataSource, Path=Data}" 
                               Header="Код специальности" ReadOnly="True"  >
               </dxg:GridColumn>
               <dxg:GridColumn FieldName="name" 
                               DataContext="{Binding ElementName=z_plan_nameDomainDataSource, Path=Data}" 
                               Header="Имя" ReadOnly="True" >
               </dxg:GridColumn>
           </dxg:GridControl.Columns>  
        </dxg:GridControl>

        private void Find_Text_TextInput(object sender, TextCompositionEventArgs e)
        {
            gridControl_Plan.FilterCriteria = new DevExpress.Data.Filtering.BinaryOperator("name", Find_Text.Text + "%", DevExpress.Data.Filtering.BinaryOperatorType.Like);
}