CODEWITHSUNDEEP
c#asp.netcrystal-reportswebforms
harsh
harsh

Reputation: 109

Avoid page refresh

I have to avoid page refresh. Every time I click the submit button, page is refreshed. How do I avoid that?

protected void Button1_Click(object sender, EventArgs e)
{
    string firstname = DropDownList1.SelectedItem.Text;

    if (firstname == "All")
    {
        da = new SqlDataAdapter(query, con);
    }

    dt = new DataTable();
    dt = ds.DataTable1;
    da.Fill(dt);
    rdc.Load(Server.MapPath("CrystalReport.rpt"));
    rdc.SetDataSource(ds);
    CrystalReportViewer1.ReportSource = rdc;
    CrystalReportViewer1.RefreshReport();
}

Upvotes: 0

Views: 906

Answers (2)

Davide Piras
Davide Piras

Reputation: 44605

if you do not want a full page refresh either use UpdatePanel for partial rendering or proper ajax approach.

the way you are doing now with a server side button click is the slowest and generates a full page postback and refresh unless you use an UpdatePanel at minimum.

check here for a discussion on how to use the Crystal Report viewer with Ajax: using AJAX with crystal report viewer

Upvotes: 0

Laradda
Laradda

Reputation: 101

I would suggest putting everything that needs to be updated in an <asp:UpdatePanel>. You can find that control in the Ajax Control Toolkit

You will also have to add a <asp:ScriptManager> on top of your page.

Upvotes: 1

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