Question

I am trying to refresh the grid-view after insert but it’s not working for me, here is my code:

<asp:TextBox ID="TimeBox" runat="server" />
                <asp:TextBox ID="CommentBox" runat="server" TextMode="MultiLine" />
                    <asp:Button ID="insButton" runat="server" OnClick="insert" Text="Insert" />
<asp:GridView ID="MainGrid" runat="server">
</asp:GridView>

and here is the code behind:

    protected void Page_Load(object sender, EventArgs e)
{
    // filling the grid view

    SqlConnection conn = new SqlConnection (@"connectionString");
    SqlCommand cmd = new SqlCommand("SELECT tim,com FROM ten",conn);
    conn.Open();

    DataSet ds = new DataSet();
    SqlDataAdapter da = new SqlDataAdapter(cmd);
    da.Fill(ds);

    MainGrid.DataSource = ds;
    MainGrid.DataBind();  
}

protected void insert(object sender, EventArgs e) //adding the comments 
{
    SqlConnection conn = new SqlConnection(@"connectionString");
    SqlCommand cmd = new SqlCommand("INSERT INTO tennis (tim,com) VALUES (@tim,@com)", conn);
    cmd.Parameters.AddWithValue("@tim", TimBox.Text);
    cmd.Parameters.AddWithValue("@com", ComBox.Text);

    conn.Open();
    cmd.ExecuteNonQuery();
    MainGrid.DataBind();
    conn.Close();
}

the insert works fine and i can see the data if I refresh the page but I am trying to refresh the grid view only without refreshing the page.

Answer 1

After inserting the new record, you have to re-query the database and rebind the grid (same as you do in Page_Load) with a datasource which includes the new, inserted record.