Thank you Dimitar, This was so helpfull.

I need the same for GridViewComboBoxColumn  instead of GridViewTextBoxColumn

Hi Dimitar,

Thank you show much, Its working fine....

How we get value of typed text in TextBoxItem_KeyPress event

Hi Dimitar,

Now I am getting value of my typed text..

I wanna search name in my db by using that typed text and bind in same column(GridViewComboBoxColumn)

I am trying like this

private void TextBoxItem_KeyDown(object sender, KeyEventArgs e)
{
    var textBoxItem = sender as RadTextBoxItem;
    var text = textBoxItem.Text;

Datatable dt = new DataTable();

string sql = "select firstname from Namemaster where firstname like '%" + text + "%' or lastname like '%" + text + "%'  or middlename like '%" + text + "%'";

dt = objdl.getDataTable(sql);

GridViewComboBoxColumn comboboxcolumn = (radGV.Columns["Combo"] as GridViewComboBoxColumn);
            comboboxcolumn.DataSource = dt;
}

public DataTable getDataTable(string str)

{

con.Open();
                sqlcom = new SqlCommand(str, con);
                sqlcom.CommandTimeout = 300;
                dr = sqlcom.ExecuteReader();
                dt = new DataTable();
                dt.Load(dr);
                con.Close();

}

But it will not working properly

I want to display firstname only in my GridViewComboBoxColumn if i searching with lastname and middlename.

while searching with firstname everything is fine, i need the same result for lastname and middlename.

Actually me need is..

I hava RadGridView with GridViewComboBoxColumn with AutoComplete, while i am searching in GridViewComboBoxColumn i want to check in my table with firstname,lastname and midlename with typed text and bind firstname only in my GridViewComboBoxColumn

I need a solution for this...

Hi Dimitar,

I have RadGridview with GridViewTextBoxColumn and I have some value in my GridViewTextBoxColumn then i want to assign again value in GridViewTextBoxColumn
my code is

radGV.Rows[radGV.CurrentCell.RowIndex].Cells["Colname"].Value = "aaaaa";

But its throw exception

Object reference not set to an instance of object

Thank you so much Dimitar, now its working fine.I have done my work...

Thanks Dimitar for the reply.

Actually i have a grid having GridViewComboBoxColumn Column. Below is the code how i added combo box column.

Now when i filter product in the combo box e.g i filter product "Keyboard" by typing "Key" and Keyboard is selected, but if i press the "Enter" key then product is actually selected and if i press "Tab" key the filtered product disappear. Is it possible that i press "Tab" key and get functionality of "Enter" key?