Explicitly Call The Event Handler?
Feb 3, 2010
On MasterPage I used Page attribute and call FindControl for tab controls on the content page. Lets say I get these two tab control on the content page tabID1 & TabID2. Lets assume that..TabID1 implement ActiveIndexChanged event and TabID2 doennot implement that event.
Now I want to check that if the tab control is implemet the ActiveIndexChanged event then explicitly call that event. I want to write this method generic for tabs on any content page.
1) How do I check that "The server control implement specific (say ActiveIndexChanged) event , If I have Controls (say Tab) instance?
2) How do I call the implemented event explicitly (say ActiveIndexChanged).
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[Code]....
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{
}
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Apr 24, 2010
Using vb.net/asp.net 2005.
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[Code]....
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Oct 15, 2010
in my web form i have a department dropdown box, in its selectedIndexChanged event i have to fill the equipment dropdown box and in equiment dropdown selectedIndexChanged i have to fill out the other textboxs.
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[code]....
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[Code]....
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Dec 28, 2010
How to call button event on browser close event? is it possible?
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Dec 22, 2010
[Code]....
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Dec 10, 2010
I've created a database table with a bunch of links I'm going to use in my program. All seems fine, except for the onClick even handler, which doesn't work as a string. Anyone got an idea how I can set it? There's no constructor for EventHandler accepting a string...
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May 18, 2010
ive a user control with several checkboxes, each control (only check boxes) has its own click even handler:
[Code]....
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[Code]....
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Jul 25, 2012
I am creating a web control by addin the html in the code behind, like this:
Code:
Dim sb As New StringBuilder
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sb.Append(" <tr class='mainRow1'>" & vbCrLf)
sb.Append("<td align='left' style='border:0px solid white;'>Main Menu</td>" & vbCrLf)
[Code] ....
This will generate the html for the table in the codebehind then inject it into the specified DIV element. My question is, if I create a control in this manner, how do i add an event that will fire a method in my codebehind? For example, if i want to create a image button i would do it this way in the code:
Code:
<asp:ImageButton CommandArgument='<%# (Container.DataItem.objectValue) %>'
ID='ImageButton1' runat='server' OnCommand='Button1_Click' ImageUrl='~/images/folder.gif' />
but in the code behind i would do this:
Code:
sb.Append("<input type='image' name='ctl00$ContentPlaceHolder1$importWizard1$folderControl1$folderRepeater$ctl04$ImageButton" & myCounter & "'")
sb.Append(" id='ctl00_ContentPlaceHolder1_importWizard1_folderControl1_folderRepeater_ctl04_ImageButton" & myCounter & "'")
sb.Append(" src='images/folder.gif' style='border-width:0px;' />" & vbCrLf)
But I cant add the OnCommand because it wont be rendered properly.
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Mar 19, 2010
I have a page request with a QueryString, say [URL]. The page is displayed in a browser. Now there is an asp:LinkButton on the page which should enable the user to open the page without the QueryString (as if he had entered [URL] directly in the browser's address bar). I had two ideas:
1) Use the PostBackUrl attribute of the LinkButton:
<asp:LinkButton ID="LinkButton1" runat="server" Text="Select" PostBackUrl="~/Orders.aspx" />
2) Use "RedirectUrl" in an event handler:
<asp:LinkButton ID="LinkButton1" runat="server" Text="Select" OnClick="LinkButton1_Click" />
and
protected void LinkButton1_Click(object sender, EventArgs e) {
Response.Redirect("~/Orders.aspx"); }
In both cases the browser's address bar shows [URL] without the QueryString, as I like to have it. But in the first case the page does not change at all. But it should, because I'm evaluating the QueryString in code-behind and control the appearance of the page depending on whether a QueryString exists or not. The second option works as intended. If I am not wrong the second option requires an additional roundtrip:
Browser sends request to server
Event handler on server side sends Redirect URL to browser
Browser sends again request to the server, but with the new URL
Server sends new requested page to browser
Whereas the first option omits the first two steps in the list above, thus saving the additional roundtrip and resulting in: Browser sends request to the server, but with the new URL (the PostbackURL specified in the LinkButton) Server sends new requested page to browser. Do I really need this second roundtrip of option (2) to achieve what I want?
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