how to add column in datagridview when i click the combobox using csharp

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in the design i have one combo box.in that combo box items are there.

when i select items in the combo box that items to be added in data grid ivew by rows.

how can i do.

for example in the combobox items are as follows

combobox Rs
GS
VB

when i select the VB,Gs in combobox that items to be added in datagridview by rows.

Ouput as follows;

VB GS

how can i do.please help me.

Posted 31-Jan-13 1:03am

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Ksh_Sr · Answer 1 · 2013-01-31T01:36:00

Solution 2

rewrite as

C#

protected void combobox_SelectedIndexChanged(object sender, EventArgs e)
{
  DataTable dt = new DataTable;
 
  dt.Columns.Add("ComboBoxItems");
  // add combox selected item to datatable object
  dt.Rows.Add(new object[] { combox.SelectedItem.Text });
  DataGridView.DataSource = dt;
}

Posted 31-Jan-13 1:36am

Ksh_Sr

Comments

Wasim1989 31-Jan-13 7:41am

but when u select another item then first item u will lose.
because u r creating new datatable object each time when selectedindex event fired.
u are not storing existing items.

[no name] 31-Jan-13 7:45am

Declare the Datatable in global scope.

Wasim1989 31-Jan-13 7:54am

ok thanx

Wasim1989 · Answer 2 · 2013-01-31T01:20:00

try this...

C#

public void LoadGridView()
{
   Datatable dt = (Datatale)ViewState("CurrentTable");
   GridView.DataSource = dt;
   GridView.DataBind();
}

Combobox selectedindexchanged event

C#

protected void combobox_SelectedIndexChanged(object sender, EventArgs e)
{
   Datatable dt = (Datatale)ViewState("CurrentTable");

    if(ViewState("CurrentTable")!= null)
    {
       dt = (Datatale)ViewState("CurrentTable");
    }
    else
    {
       dt = new Datattable;
    }
    
    dt.Colums.Add("ComboBoxItems");
    // add combox selected item to datatable object
    dt.Rows.Add(new object[] { combox.SelectedItem.Text });
    
    ViewState("CurrentTable") = dt;
    // call LoadGridView Funcation
    LoadGridView();
}

hope this will help you..