CODEWITHSUNDEEP
c#asp.netpostback
shaun.breach
shaun.breach

Reputation: 229

Forcing a postback

Is there a way to force a postback in code?

I'm looking to force the raising of a postback from a method in the c# code behind my asp.net web application.

Upvotes: 17

Views: 118869

Answers (8)

Vortex852456
Vortex852456

Reputation: 739

Here the solution from http://forums.asp.net/t/928411.aspx/1 as mentioned by mamoo - just in case the website goes offline. Worked well for me.

StringBuilder sbScript = new StringBuilder();

sbScript.Append("<script language='JavaScript' type='text/javascript'>\n");
sbScript.Append("<!--\n");
sbScript.Append(this.GetPostBackEventReference(this, "PBArg") + ";\n");
sbScript.Append("// -->\n");
sbScript.Append("</script>\n");

this.RegisterStartupScript("AutoPostBackScript", sbScript.ToString());

Upvotes: 3

Ensari
Ensari

Reputation: 11

By using Server.Transfer("YourCurrentPage.aspx"); we can easily acheive this and it is better than Response.Redirect(); coz Server.Transfer() will save you the round trip.

Upvotes: 1

devilcius
devilcius

Reputation: 1884

Simpler:

ScriptManager.RegisterStartupScript(this.Page, this.Page.GetType(), "DoPostBack", "__doPostBack(sender, e)", true);

Upvotes: 6

live-love
live-love

Reputation: 52524

You can try redirecting to same page.

Response.Redirect(Request.RawUrl);

Upvotes: 10

Mihai
Mihai

Reputation: 2865

You can use a data-bound control like the Repeater or ListView, re-bind it to a list of control properties as needed, and let it generate the controls dynamically.

As an alternative, you can use Response.Redirect(".") to re-load the same page.

Upvotes: 1

Shadow Wizzard
Shadow Wizzard

Reputation: 66398

You can manually call the method invoked by PostBack from the Page_Load event:

public void Page_Load(object sender, EventArgs e)
{
    MyPostBackMethod(sender, e);
}

But if you mean if you can have the Page.IsPostBack property set to true without real post back, then the answer is no.

Upvotes: 0

Andy Rose
Andy Rose

Reputation: 17014

No, not from code behind. A postback is a request initiated from a page on the client back to itself on the server using the Http POST method. On the server side you can request a redirect but the will be Http GET request.

Upvotes: 1

mamoo
mamoo

Reputation: 8166

A postback is triggered after a form submission, so it's related to a client action... take a look here for an explanation: ASP.NET - Is it possible to trigger a postback from server code?

and here for a solution: http://forums.asp.net/t/928411.aspx/1

Upvotes: 9

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