Web Forms :: Postback Only Works On The Second Click?
Oct 13, 2010
1) i have a image control on a page which is supposed to send url parameters to a url on a different server once it is clicked..
2) when i click it, it fires an event which uses the form parameters to build a url then this assigned to the postbackurl property of the image control.
3) After this first click the page is not redirected but if you click it a SECOND time, it goes to the appropriate URL.
why this is happening and what i can do to ensure it gets redirected after the FIRST click?
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Nov 17, 2010
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Apr 29, 2010
I find a special circumstances as follows:
My web form contains a postback button. The button will postback and call a server-side method. The method will process something that may spend about 20 seconds. However, user may try to click the button several times within the waiting period. The sequential clicking may cause the first running method incomplete and stop, since the second click postback will dominate the method and start again. How can I solve it?
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Oct 25, 2010
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[Code]....
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Sep 4, 2010
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May 4, 2010
Background: I am customizing an existing ASP .NET / C# application. It has it's own little "framework" and conventions for developers to follow when extending/customizing its functionality. I am currently extending some of it's administrative functionality, to which the framework provides a contract to enforce implementation of the GetAdministrationInterface() method, which returns System.Web.UI.Control. This method is called during the Page_Load() method of the page hosting the GUI interface.
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[Code]....
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Sep 26, 2010
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Mar 23, 2010
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[code]....
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Oct 5, 2012
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Jan 13, 2011
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Dec 7, 2010
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[Code]....
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[Code]....
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Mar 5, 2010
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Mar 13, 2011
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string strConnString = "data source=.;initial catalog=saeed;integrated security=true"; using (SqlConnection con = new SqlConnection(strConnString)) {
[CODE]...
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Mar 24, 2010
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The buttons:
[Code]....
[Code]....
And a placeholder to add dynamically created controls:
[Code]....
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[Code]....
[Code]....
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Jun 29, 2010
how determinate if postback was fired by click or press "Enter"
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May 19, 2010
I have an iframe in .aspx page , in which i open an html page(local) and I want to postback my .aspx page when user click on an img( that is in html page ) and get that image id on server side.
MyAspxPage -> Iframe -> HtmlPage -> img
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Jul 19, 2010
I have a repeater which contains a hidden link button that fires when I click a row in my repeater.
Here is the markup for my repeater:
<div id="divResults" style="height: 290px; overflow-y: auto;">
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Row.Attributes.Add("onclick",
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Jul 24, 2010
am adding control dynamically in button click event in asp .net i have one more button when i clicked the added control is disappeared .
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Nov 20, 2010
i have some textbox that i validate with a customvalidator control (only, and must be, server side function) and i have an imagebutton control for submit.I must stop the postback if there are some errors in the validation function.I set the validation property argumets.isvalid = false in the customvalidator function but doesn't work, the postback continue.i have tried to set the imagebutton property postbackurl = "" in the validation function but doesn't work.
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Oct 13, 2010
I have a GridView that has several dynamic columns (I do not know how many at design time and it could be 0-12 columns, hence need for dynamic columns). I have the columns in the grid and data bound to them - works great. There are other standard, design-time TemplateField columns with TextBox controls in them. These are bound with values that the user can edit. The grid is posted back via a Submit button. My question is "Why does gv.Columns.Insert() cause all my TextBox data to be null on Postback, but gv.Columns.Add() works like a champ?"
protected void BuildColumns()
{
// The first column to begin to insert the columns in the GridView
int columnIndex = 5;
BoundField aoColumn = new BoundField();
aoColumn.HeaderText = "New Column 1";
gvMyGrid.Columns.Insert(columnIndex, aoColumn); // kills txtQuantity.Text on postback
gvMyGrid.Columns.Add(aoColumn); // works fine
columnIndex++;
foreach (MyEntity my in _myEntityCollection)
{
BoundField myColumn = new BoundField();
myColumn.HeaderText = String.Format("{0:d}", my.StartDate);
gvMyGrid.Columns.Insert(columnIndex, myColumn);
columnIndex++;
}
}
I then go on to assign values to these BoundFields in the _RowDataBound method and all of this works great. However, when I post back and try to reference some TextBox and they are all null. And yes, I have the BuildColumns() call wrapped in if (!IsPostBack) on Page_Load. Of course I would like to use .Insert() so that the columns can go in the proper location and not at the end of the Columns array.
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