Filter wpf DataGrid column

Question

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Hi,
This is a Datagrid that i need to search or filter name or family of people by text box. how can i write code for TextChanged event. what's its method simply?

XML

<Grid>
       <DataGrid Margin="3,33,145,43" AutoGenerateColumns="False" EnableRowVirtualization="True" ItemsSource="{Binding}" HeadersVisibility="All" HorizontalGridLinesBrush="DarkGray"
                 Name="grdPersonnel1" AlternatingRowremoved="LightGray" VerticalGridLinesBrush="DarkGray" HorizontalScrollBarVisibility="Auto" FontFamily="Courier New" FontSize="12"
                 FontWeight="Black" IsTextSearchEnabled="True" BorderBrush="DarkGray" VerticalContentAlignment="Center" IsReadOnly="True" >

           <DataGrid.Columns>
               <DataGridTextColumn Binding="{Binding Path=ID}" Header="ID" Width="Auto"></DataGridTextColumn>
               <DataGridTextColumn Binding="{Binding Path=Name}" Header="Name" Width="Auto" ></DataGridTextColumn>
               <DataGridTextColumn Binding="{Binding Path=Family}" Header="Family" Width="Auto"></DataGridTextColumn>
           </DataGrid.Columns>
       </DataGrid>
   </Grid>

    <TextBox Grid.Row="7" Height="23" HorizontalAlignment="Left" Margin="75,13,0,0" Name="txtFilter" VerticalAlignment="Top" Width="120" TextChanged="txtFilter_TextChanged" />

Posted 6-Jul-12 6:22am

M.H. Shojaei

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Comments

[no name] 6-Jul-12 14:57pm

Perhaps you should explain what you mean by "how can i write code for TextChanged event. what's its method simply"

M.H. Shojaei 7-Jul-12 12:44pm

I need a code or guidance for filtering datagrid.

2 solutions

Solution 1

You should look at the ICollectionView.

This is great for filtering data used in WPF!

However, a little more detail would have been nice. i.e what are you trying to do? what have you tried etc, are you using MVVM / Code behind!!

C#

ICollectionView view = CollectionViewSource.GetDefaultView(newValue);
IEqualityComparer<string> comparer = StringComparer.InvariantCultureIgnoreCase;
view.Filter = o => { 
                     Person p = o as Person; 
                     return p.FirstName.Contains(SearchedText, comparer) 
                            || p.LastName.Contains(SearchedText, comparer); 
                   }</string>

Posted 6-Jul-12 9:21am

db7uk

Comments

M.H. Shojaei 7-Jul-12 12:59pm

I want to filter datagrid column by textBox.

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M.H. Shojaei · Accepted Answer · 2012-07-07T21:45:00

XML

I resolved it:

<pre lang="c#"> private void textBox1_TextChanged(object sender, TextChangedEventArgs e)
        {
            try
            {
                SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=E:\Personel.mdf;Integrated Security=True;User Instance=True");
                SqlDataAdapter adapter = new SqlDataAdapter();
                adapter.SelectCommand = new SqlCommand();
                adapter.SelectCommand.Connection = con;
                adapter.SelectCommand.CommandText = "SELECT * FROM Personnels where Name like  N'%" + textBox1.Text + "%'";
                DataTable dt = new DataTable();
                adapter.Fill(dt);
                grdPersonnel1.DataContext = dt;
            }
            catch (Exception) { }
        }</pre>