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I've come across this odd behavior, that I'm not quite sure what to make of it, or even how to determine the source of the problem.
Ok, I have one page.
3 different buttons on that page.
asp:Panel ID="PanelNew" runat="server" Width="97%" >
asp:button runat="server" text="MostRecent" OnCommand="SelectActiveView" CommandArgument="MostRecent" CommandName="Hide" />
asp:button runat="server" text="Most Recent 2" id="testbutton" />
/asp:Panel>
Then I had code in the page load that is:
<br />
<br />
testbutton.Command += new CommandEventHandler(this.SelectActiveView);<br />
testbutton.CommandArgument = "MostRecent";<br />
testbutton.CommandName = "Hide";<br />
<br />
Button TempButton = new Button(); <br />
TempButton.Text = "Cancel";<br />
TempButton.Command += new CommandEventHandler(this.SelectActiveView);<br />
TempButton.CommandArgument = "MostRecent";<br />
TempButton.CommandName = "Hide";<br />
PanelNew.Controls.Add(TempButton);<br />
So, I have on that's declared in html, one that's declared in html then modified from code, then the last is complete code made, all three buttons end up having the same command arguements, but the one made from code behaves differently from the rest. The function they call, modifies some hiden value fields then calls a page load.
Ok, now this part, is hard to explain, so please stay with me.
If I go straight to that page from a link, all three buttons work, first try.
If I click on a button that does a post back on to the page, then I click on the tempbutton, the hidden field values are not updated, Then I click the same button a second time and it does update the hidden values like it was supposed to on the first click.
Well, I hope that made sense. If it didn't then post that and I'll see if i can post some source code to duplicate this behavior.
Drathmar
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A couple of things come to mind:
+ Try to give the control an id when you statically declare on the web page or dynamically load the control in code.
+ Try to add the dynamic control in the Init phase in the control life cycle.
+ Just curious that why you try with 3 buttons that have the same command name and argument.
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My problem in a nutshell is the programmatically created controls aren't working 100% of the time.
NOTE: Giving the Programmically made controls an id fixed the problem, and thank you minhpc_bk for the help.
However I made some sample code to demonstrate the problem, what's cause the problem, is still abit puzzling,
To replicate the problem:
When the page first loaded the hidden value is blank, then I click on ButtonR1 or R2 to make it red. So on and so on.
Now, if you start clicking on the buttons in the "Panel Created" panel, they don't work 100% of the time. You have to click the same button twice in a row for it to work.
Drathmar
Here is a simplified example of my problem.
*****************HTML**************
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Panel ID="Panel1" runat="server" Height="50px" Width="125px">
<asp:Button ID="Button1" runat="server" Text="Button" OnCommand="SetPanelColor" CommandArgument="Reset" />
</asp:Panel>
<asp:Panel ID="PanelRed" runat="server" Height="50px" Width="125px" GroupingText="Make Panel Red">
<asp:Button ID="ButtonR1" runat="server" Text="ButtonR1" OnCommand="SetPanelColor" CommandArgument="Red" />
<asp:Button ID="ButtonR2" runat="server" Text="ButtonR2" />
</asp:Panel>
<asp:Panel ID="PanelBlue" runat="server" Height="50px" Width="125px" GroupingText="Make Panel Blue">
<asp:Button ID="ButtonB1" runat="server" Text="ButtonB1" OnCommand="SetPanelColor" CommandArgument="Blue" />
<asp:Button ID="ButtonB2" runat="server" Text="ButtonB2" />
</asp:Panel>
<asp:Panel ID="PanelCreate" runat="server" Height="50px" Width="125px" GroupingText="Panel Created">
</asp:Panel>
</div>
<asp:HiddenField ID="HiddenField1" runat="server" />
</form>
</body>
</html>
***************** Code **************
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write("HiddenField1.Value = " + HiddenField1.Value + "<br>");
if (HiddenField1.Value == "Red")
Panel1.BackColor = System.Drawing.Color.Red;
else if (HiddenField1.Value == "Blue")
Panel1.BackColor = System.Drawing.Color.Blue;
else
Panel1.BackColor = System.Drawing.Color.White;
ButtonB2.CommandArgument = "Blue";
ButtonB2.Command += new CommandEventHandler(SetPanelColor);
ButtonR2.CommandArgument = "Red";
ButtonR2.Command += new CommandEventHandler(SetPanelColor);
PanelCreate.Controls.Clear();
Button TempButton;
TempButton = new Button();
TempButton.CommandArgument = "Red";
TempButton.Text = "ButtonR3";
TempButton.Command += new CommandEventHandler(SetPanelColor);
PanelCreate.Controls.Add(TempButton);
TempButton = new Button();
TempButton.CommandArgument = "Blue";
TempButton.Text = "ButtonB3";
TempButton.Command += new CommandEventHandler(SetPanelColor);
PanelCreate.Controls.Add(TempButton);
}
protected void SetPanelColor(Object sender, CommandEventArgs e)
{
HiddenField1.Value = e.CommandArgument.ToString();
Page_Load(sender, e);
}
}
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Hi there,
Basically, the ASP.NET processes the postback event like Command based on the id of the control. When you dynamically create and add the control, the ASP.NET will generate the automatic id if you don't explicitly specify a value. And if the id of the control before and after it is clicked, the postback cannot be routed to the right control, and as a result of this the event handler does not execute. You can check this thing by doing a view source the web page. Here it's really odd that you call the Page_Load event handler again in the SetPanelColor as it leads to the fact that you recreate the dynamic control. Instead, you can seperate the code to set the backcolor of the panel in a method ,say SetPanelBackColor, then you can call it in both the Page_Load and SetPanelColor methods.
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m.rastgar wrote: weprteoriughewerpoiuthgwpeorijgpoewjogihwpeorhgpoweirhgpoihwergnsdfvjowijvowertweprteo
...
rijgpoewjogihwpeorhgpoweirhgpoihwergnsdfvjowijvowert
And just what the heck was that in aid of?
-- modified at 18:21 Sunday 30th July, 2006
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Just because you did not get an immediate answer to your question does not give you carte blanche to abuse the forum as you done in the thread above. [^]
In any case, abuse the forum and you will find that nobody will respond.
ALSO. The Code Project members visiting this forum answer questions out of the goodness of their heart. Code Project members are not employees of Code Project and are not duty bound to answer at all. If you read the rules of Code Project then you would know that !!!!
To show good faith I suggest you delete the thread as stated above.
modified 1-Aug-19 21:02pm.
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Here Here!
Remember a while back a guy posting words to the effect of "I've had no response, and I'll KEEP POSTING till I get one...."
Bloody muppet
"Now I guess I'll sit back and watch people misinterpret what I just said......"
Christian Graus At The Soapbox
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Hi,
I have a group of checkboxs in the beginning of each row of a table. Each row has other controls in it. When I get a set of values back from the database and one of the values is of course what checkbox sould be checked. I am wondering how u guys would code the rest of the fields in the row to be databound. Now i'm not asking how u databind to a control, I know how to do this. I'm asking would u put your code in a select statement on checkbox value and then put each row of controls names in between a case? or maybe a set of ifs ... I don't want to do that personnally. So i'm asking if anybody has come up with a better solution since i'm sure this is common situation in programming.
Thanks,
JamJ
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Hi
i need to place a windows user control on asp.net page(c# 1.1). i have used object tag in my asp.net page but i am getting a plain area where i had placed the user control. i also need to pass some value touser control from my page.
i assume this is an security problem. how can i change the security settings to show the windows user control on the web page.
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stop reposting your question and read yiour replies.
By the way. Theres not a such thing as "windows user control" in asp
--------------------------------------------------------
1 line of code equals many bugs. So don't write any!!
My mad coder blog
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Dear All,
I face problem in my application which is : I want to separate code behind of page and place it in GAC and Ui in other application that reference this dll I want every handler such as Page_Load to be called from this dll , I successfully add dll to GAC ,but how to inhert or use it methods in WebPages.
thanks
a333
-- modified at 4:55 Sunday 30th July, 2006
a333
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Please don't cross post.
---
b { font-weight: normal; }
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hi,
when using placeholder we can inject a contol to a page wich the control is instantiated.pretend that a user has built a page wich is asp.net page (with asp.net controls and maybe asp scripts)but it is not saved as asp.net page or usercontrol on the server so it is in the sql and every time the user requests his page we want to load his page and render all of the asp.net controls in the page,like what it is in the cms applications,i want to know how can i do this ?
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You can use the Page.ParseControl method to parse a string into a control, then add it to a placeholder.
---
b { font-weight: normal; }
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hi there,
the point is what if i want to parse a complete asp page,is there any way to do this?
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why? Change your design.
you might as well save it as an html page and just display it
--------------------------------------------------------
1 line of code equals many bugs. So don't write any!!
My mad coder blog
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Actually, maybe look into web parts and build sections of the page
There would be no need to chache the page into the database.
If you need to then you would need to serialize all control states on the page. And really that doesn't make any sense to do it that way.
Change your design to save the values you need into a serialized object or the database.
That would be a much better decision.
Your not thinking an object oriented way.
--------------------------------------------------------
1 line of code equals many bugs. So don't write any!!
My mad coder blog
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Hi,
in my asp.net 1.1 application, i am sending request to another site, getting response from there.
my code is
strUrl =" http://www.xyz.com/xyz.html";<br />
WebRequest request = WebRequest.Create(strUrl);<br />
request.Credentials = CredentialCache.DefaultCredentials;<br />
HttpWebResponse response = (HttpWebResponse)request.GetResponse();<br />
if(response.StatusDescription == "OK") {<br />
my problem is instead of Default Credentials, i want to give proxy userid, password to it. (because without proxy credentials i am unable to access the xyz.com)
anybody give me solution for this?
regards
GV Ramana
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Hi buddy,
add the following code to supply ur username and password
WebProxy myproxy=new WebProxy("proxy server IP",port);
myproxy.Credentials=new NetworkCredential("user name","password","domain");
request.Proxy=myproxy;
regards,
abhishek:->
"If u believe in psychokinesis then raise my hand." 
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Hi everyone. I want to create a radio for my website. Can anyone please advice me how i go about creating one.
Thanks
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What do you mean by Radio. Are you talking about radio button?
Best Regards,
Apurva Kaushal
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Hi there,
I'm creating my own blog...
how can I make permalinks on my site... so the url will be
http://www.somewhere.com/04/29/this_blog_rox.aspx instead of http://www.somewhere.com/readpost.aspx?id=11
any ideas?
thanks
Christian
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Hello,
I have a Page that invoke a call to a WebService using C#.
I want to access some of the Profile properties in the WebService.
I tried to use "Context.Profile." .... (I don't know how to continue from here)
I will appriciate any help
Thanks,
Yossi
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Hi,
I and displaying a form with some dynamic details to user.
I am also showing two buttons namely : Print , Save.
So, on the click of Save button i want to create the current page in PDF and send it to client side for save.
How can this be achived.
Thanks in advance.
Deepak Surana
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You can use sharpPdf class lib its open source and you can dowload it from sourceforg web site. However it dint hav any fi=unctionality to convrt HTML - to- PDF but you can make same layout using its Table, Row column like property
Nobody is perfect i'm Nobody
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