need help in filling datagrid on combo item selection

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Hii all

Below is the code i wrote to fill the daragrid

VB

con.Open()
        Dim cmd As MySqlCommand = New MySqlCommand("select * from demodata where name='" + ComboBox1.Text + "'", con)
        Dim ds As New DataSet("demodata")
        Dim da As MySqlDataAdapter = New MySqlDataAdapter(cmd)
        da.Fill(ds)
        Datagrid1.ItemsSource = ds.Tables(0).DefaultView
        con.Close()

and this is the xaml code

HTML

ComboBox Height="23" HorizontalAlignment="Left" Margin="344,302,0,0" Name="ComboBox1" VerticalAlignment="Top" Width="120" ItemsSource="{Binding}">

            <ComboBoxItem Content="ss" />
            <ComboBoxItem Content="s" />
        </ComboBox>

i have both s and ss names in DB but when i m selecting its not showing me the values in the grid..
please tell me the error...

Posted 21-Jan-13 22:26pm

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josh-jw · Answer 1 · 2013-01-21T23:06:00

C#

private void comboxsample_SelectionChanged(object sender, SelectionChangedEventArgs e)
      {
          Dispatcher.BeginInvoke(new Action(selectItem), DispatcherPriority.Background);

      }
      private void selectItem()
      {
          string s = this.comboxsample.Text;
      }

use namespace

C#

using System.Windows.Threading;

josh-jw · Answer 2 · 2013-01-21T22:41:00

Solution 2

XML

<DataGrid AutoGenerateColumns="False" Height="200" ItemsSource="{Binding}" HorizontalAlignment="Left" Margin="48,63,0,0" Name="dataGrid1" VerticalAlignment="Top" Width="200" />

Posted 21-Jan-13 22:41pm

josh-jw

Comments

[no name] 22-Jan-13 4:43am

i did that also..but it showing the previous value for the next entries. e.g. there are 3 item in combo a, b, c so when i m selecting a grid is blank, when i m selecting b, it showing the data of a so on..

[no name] 22-Jan-13 4:52am

if i do the same code at button click it's working fine..but i need it in selection of combo..

josh-jw 22-Jan-13 4:52am

please put a break point in
Dim cmd As MySqlCommand = New MySqlCommand("select * from demodata where name='" + ComboBox1.Text + "'", con)
and check whether combobox1.text having the right value.

josh-jw · Answer 3 · 2013-01-21T22:36:00

Solution 1

In xaml code put datagrid itemsource as binding.

Posted 21-Jan-13 22:36pm

josh-jw

Comments

[no name] 22-Jan-13 4:37am

didn't get u sry..pls example

[no name] 22-Jan-13 4:43am

i did that also..but it showing the previous value for the next entries.
e.g. there are 3 item in combo a, b, c
so when i m selecting a grid is blank, when i m selecting b, it showing the data of a so on..