try this code
string strConnString = ConfigurationManager.ConnectionStrings["CntString"].ConnectionString;
string str;
SqlCommand com;
SqlDataAdapter sqlda;
DataSet ds;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
bindgrid("Select * from Tbl_Emp");
}
}
void bindgrid(string Qry)
{
SqlConnection con = new SqlConnection(strConnString);
con.Open();
str = Qry;
com = new SqlCommand(str, con);
sqlda = new SqlDataAdapter(com);
ds = new DataSet();
sqlda.Fill(ds, "student");
Grd1.DataSource = ds;
Grd1.DataBind();
con.Close();
}
protected void Button1_Click(object sender, EventArgs e)
{
str="Update Tbl_Emp Set Empname='CCC1' WHERE EmpId=2";
SqlConnection con = new SqlConnection(strConnString);
con.Open();
com = new SqlCommand(str, con);
com.ExecuteNonQuery();
bindgrid("Select * from Tbl_Emp");
}
<asp:GridView ID="Grd1" runat ="server" AutoGenerateColumns ="true">
</asp:GridView>
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