Searching from database.

<asp:textbox id="txt_Search" runat="server" width="200px">
<Button ID="btn_Search"  runat="server" Text="Search"  önclick="btn_Search_Click">
<br /><br />
<asp:textbox id="txt_Result" runat="server" textmode="MultiLine" width="200px" height="200px">

SqlConnection con = new SqlConnection("Ur Connection String");
protected void Page_Load(object sender, EventArgs e)
{

}
protected void btn_Search_Click(object sender, EventArgs e)
{
    try
    {
        con.Open();
        string Query =

        "Select UserName from Users Where UserName LIKE
        '%" + txt_Search.Text + "%'";

        SqlDataAdapter da = new SqlDataAdapter(Query, con);
        DataTable DT = new DataTable();
        da.Fill(DT);
        txt_Result.Text = "";
        for (int i = 0; i < DT.Rows.Count; i++)
        {
            txt_Result.Text += DT.Rows[i][0].ToString();
            txt_Result.Text += " ";
        }
        if (txt_Result.Text == "")
            txt_Result.Text = "No Result Found";
    }
    catch (Exception ex)
    {

    }
    finally
    {
        con.Close();
    }
}