ASP.NET [Need an event after page load (After GridView renew data) ]

asp.net

I renew parameters of my DataSource for GridView on Button and loads event Page_Load()
and After it (or with it) GridView renews itself.

I need to rename Header rows but there is no event after Page Load.

more information about details here :

[On Button Click] I change DataSource and Bind it (SqlDataSource1.DataBind(); ) Then sure Page gone to Refresh elements.

[On Page_Load] GridView is changing data, but if I can't change Headers there because it's looking like loads after this function 🙁

[one more Button] I can add new button with a function – rename headers and it works correct everytime

    protected void Button2_Click(object sender, EventArgs e)
{
    // Stack overflow
    DataRow T;
    if (go)
        if (GridView2.HeaderRow.Cells.Count != 0)
            for (int i = 0; i < SQF.SQF.Permission.Rows.Count; i++)
            {
                T = SQF.SQF.Permission.Rows[i];
                GridView2.HeaderRow.Cells[i].Text = (string)T["Caption1"];
                WebMsgBox.Show((string)T["Caption1"]);
            }
}

Trouble : I no need one more button for it, I need to rename header rows after I click button to change Data but I have no idea where I can do it.

thank you.

Best Answer

Well you could use Gridview DataBound event, like that:

<asp:GridView runat="server" ID="SomeID" OnDataBound="GridVIew_OnDataBound" ... />

The DataBound event occurs right after the databinding process for that particular control has completed.

Related Solutions

ASP.NET page events – Button click event comes after GridView bind

The answer was in the Button Click event, after the data has been changed, call DataBind() on the page to cause the GridView (and anything else that needs it) to rebind. I didn't realise you could do that.

Thank you Ocdecio & Mufasa - I would mark your answers as helpful, but I got no rep yet.

C# – Save button click event getting fired up on refreshing the page once done with binding the data to a gridview through save button in asp.net

that's a common problem. check similar SO questions: Webforms Refresh problem, How to stop unwanted postback.

if a few words, web browser refresh button just sends the last request to the server in your case that's a "Save" button click event, thus it gives duplicate rows. use Response.Redirect, this way the last request will be just navigation to the page, so the refresh will not cause undesired effects.

EDITED

I see you have added some code. here's a workaround for you. the fact that you are saving data to database helps a lot. first thing on page load event no need to check if page IsPostBack, just call the bindassets("", ""); method.

as for save button click event. no need to call the bindassets("", ""); it will be called from page load.

protected void btnsaveasset_Click(object sender, EventArgs e)
{
        if (txtdescription.Text != "" && txtdtrecieved.Text != "" && txtcost.Text != "" && txtmodelno.Text != "" && txtquantity.Text != "")
        {
            try
            {
                string desc= txtdescription.Text;
                DateTime dtrecd = Convert.ToDateTime(txtdtrecieved.Text);
                string cost = txtcost.Text;
                string modelno = txtmodelno.Text;
                double quantity = Convert.ToDouble(txtquantity.Text);
                SqlConnection sqlcon = new SqlConnection(con);
                sqlcon.Open();
                string save = "Insert into Asset(Description,Recieveddate,cost,Modelno,Quantity)values(@desc,@date,@cost,@modelno,@quantity)";
                SqlCommand cmd = new SqlCommand(save, sqlcon);
                cmd.CommandType = CommandType.Text;
                cmd.Parameters.Add("@desc", desc);
                cmd.Parameters.Add("@date", dtrecd);
                cmd.Parameters.Add("@cost", cost);
                cmd.Parameters.Add("@modelno", modelno);
                cmd.Parameters.Add("@quantity", quantity);
                cmd.ExecuteNonQuery();
                sqlcon.Close();
                //bindassets("", "");
                btnsaveasset.Enabled = false;
                txtdescription.Text = "";
                txtdtrecieved.Text = "";
                txtcost.Text = "";
                txtmodelno.Text = "";
                txtquantity.Text = "";
                lblErrMsg.Text = "data inserted successfully..";

            }
            catch
            {
                lblErrMsg.Text = "Please enter valid data and try again...";
            }
        }
        else
        {
            lblErrMsg.Text = "Please enter valid data and try again...";
        }
        Response.Redirect("nameofpage.aspx", false);//does a charm. browser refresh button will repeat last action and from now on that's a Response.Redirect("nameofpage.aspx", false). thus no duplicate records
}

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