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Hi! in future post, try using the code block  just for better understanding of the code 
Well, the Control, must be a GridView, so you can add
public static Control FindControlRecursive(Control Root, string Id)
{
if (Root.ID == Id)
return ((GridView)Root);
if (Root is GridView)
{
GridView gv = ((GridView)Root);
Int32 num = 3;
Int32 row = 1;
Control FoundCtl = ((Control)gv.Rows[row].Cells[num].FindControl(Id));
if (FoundCtl != null)
return FoundCtl;
}
return null;
}
Remember that in ASP.NET the dinamically controls added like in grid view Template field, have the same name, except in Client-Side. if you want a especific row, you only need to change the row parameter 
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I am new to web applications.
I wish to do an e-commerce site.
I wish to use ASP.NET , C#.Net and SQL Server.
What is front end and back end?
for a two tier application I think we say VB.NET as a front end and SQL Server as a back end
I think an e-commerce site is a three tier application
I preferred ASP.NET, C#.Net & SQl Server.
Which one of these are called as a front end and the backend?
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When I click Button1, Button2 gets enabled and the label's text is set to "bye". This is done with a bit of javascript. When Button2 is clicked, it's text should be set to "bye" - the new text value of the label, but is set to "hello" instead - the original text value of the label. How can I fix this?
Aspx:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Test</title>
<script type="text/javascript">
function Hello() {
document.getElementById('Button2').disabled = false;
document.getElementById('Label1').innerText = "bye";
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="Button1" type="button" value="Button1" onclick="Hello()" />
<br />
<asp:Button ID="Button2" runat="server" Enabled="False" Text="Button2"
onclick="Button2_Click" />
<br />
<asp:Label runat="server" ID="Label1" Text="hello"></asp:Label>
</div>
</form>
</body>
</html>
Cs:
protected void Button2_Click(object sender, EventArgs e)
{
this.Button2.Text = this.Label1.Text;
}
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Markup - HTML
<!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>Test</title>
<script type="text/javascript">
function Hello()
{
document.getElementById('Button2').disabled = false;
document.getElementById('Label1').innerText = "bye";
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="Button1" type="button" value="Button1" onclick="Hello()" /><br />
<asp:Button ID="Button2" runat="server" Enabled="False" Text="Button2" /><br />
<asp:Label runat="server" ID="Label1" Text="hello" />
</div>
</form>
</body>
</html>
Code-behind
void Page_Init(object sender, EventArgs e)
{
Button2.Click += new EventHandler(Button2_Click);
}
protected void Page_Load(object sender, EventArgs e)
{
}
void Button2_Click(object sender, EventArgs e)
{
Button button = (Button)sender;
button.Text = "Something new";
}
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I need to use the label's new text value in the code behind for further processing. Using 'this.label1.text' doesn't work as it gives the original text value not the new one.
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Oops sorry. Can you not simply use the code-behind to solve this issue?
Because your clicking on a server control the page is reloaded back to its orginal state. If you want to change the text of the button after changing the label control using JavaScript then you will need to change the second button using JavaScript also.
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No. I am working on an application that utilizes a scheduling control. This control has a client-side click event that I must use. When I click on the control it must set a property wich in turn must be used when a button on the page is clicked. My solution to this was to set a label's text property but that doesn't seem to work, as you have seen in my code. Maybe you can help me out. Thanks anyways.
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Only other way I can think of is to use a hidden field.
<!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>Test</title>
<script type="text/javascript">
function Hello() {
var value = "bye";
document.getElementById("<%=Button2.ClientID %>").disabled = false;
document.getElementById("<%=Label1.ClientID %>").innerText = value;
document.getElementById("<%=hdnValue.ClientID %>").value = value;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="Button1" type="button" value="Button1" onclick="Hello()" /><br />
<asp:Button ID="Button2" runat="server" Enabled="False" Text="Button2" />
<br />
<asp:Label runat="server" ID="Label1" Text="hello" />
<asp:HiddenField ID="hdnValue" runat="server" />
</div>
</form>
</body>
</html>
void Page_Init(object sender, EventArgs e)
{
Button2.Click += new EventHandler(Button2_Click);
}
protected void Page_Load(object sender, EventArgs e)
{
}
void Button2_Click(object sender, EventArgs e)
{
Button button = (Button)sender;
button.Text = hdnValue.Value;
}
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Thank you very much! It works!
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When I click button 1, button 2 must be enabled and the label's text must change from "hello" to "bye". This must be done clientside through Javascript. How must I change the following code to get this to work? When I click button 1 the label's text changes but immediately reverts back to it's original value.
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Test</title>
<script type="text/javascript">
function Hello() {
document.getElementById('Button2').disabled = false;
document.getElementById('Label1').innerText = "bye";
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="Hello()"/>
<br />
<asp:Button ID="Button2" runat="server" Enabled="False" Text="Button" />
<br />
<asp:Label runat="server" ID="Label1" Text="hello"></asp:Label>
</div>
</form>
</body>
</html>
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When you click the button the client-side script is being executed properly, however, it also causes a post-back which resets the page. If all you need to do execute client-side script with no post-back then change the asp:button controls to simple html elements <input type=button>
I know the language. I've read a book. - _Madmatt
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Or just put a
return false; in the Hello function.
That should also work.
..Go Green..
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Only if he includes the "return.." part in the OnClientClick
also. Like:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Test</title>
<script type="text/javascript">
function Hello() {
document.getElementById('Button2').disabled = false;
document.getElementById('Label1').innerText = "bye";
return false;
} </script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="return Hello()" />
<br />
<asp:Button ID="Button2" runat="server" Enabled="False" Text="Button" />
<br />
<asp:Label runat="server" ID="Label1" Text="hello"></asp:Label>
</div>
</form>
</body>
</html>
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Could you perhaps explain the purpose of these return statements?
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Returning a value in a javascript click event handler tells the browser whether or not to continue normal processing of that click. For a submit button, returning false tells it to stop processing a not to actually submit the form. Returning true allows it to continue submitting the form normally. For a hyperlink returning true would allow the browser to navigate to the URL and returning false would leave the user on the curernt page.
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return statement is to avoid PostBack.
"When I click button 1 the label's text changes but immediately reverts back to it's original value."
this is because of PostBack
Raju.M
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Yes. And that's what I said.
His Hello() function is called on OnClientClick. I missed the return in OnClientClick part.
I am sorry I didn't explain it.
..Go Green..
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Hi..
I am revisiting codeproject after couple of days due to my old question.
I have done some coding in session_end in global.asx and want to execute this event , if someone closes the browser window.
I just want to have alternative to authentication.
thanks,
By:
Hemant Thaker
modified on Friday, June 25, 2010 8:17 AM
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I believe someone posted an article or tip/trick regarding this a few days ago though can't find it now. Try searching through recent articles.
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair.
nils illegitimus carborundum
me, me, me
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Hi, I have a generic list of objects returned and I want to store it in a datatable in viewstate as I have to do some in memory operations on the list (edit,update,delete)
How to go about this task ?
Mike.
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Hi I have a gridview which has some records (recordID is being fetched from database)
I load the results in datatable which has columns like
--------------------------------------
RecordID | EmployeeID | Name | Address
--------------------------------------
1 4 John xyz
2 5 Smith xyz
Now user can edit the records with a checkbox list (problem is that he can reselect the existing checked items again, so the recordID is null for reselected items, I set it to zero to distinguish all new records)
So the new datatable becomes
--------------------------------------
RecordID | EmployeeID | Name | Address
--------------------------------------
0 4 John xyz (reselected rows with 0 id)
0 5 Smith xyz (reselected rows with 0 id)
0 8 Evans xxx (new record)
Now I am on form update button, I am trying to figure out how to find which records to insert and how to find records to do nothing with ? The reselected records already existing in database are creating problem for me.
Mike.
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Hi,
I have designed ASP.NET C# 3.5 (MySQL) website and it is hosted on shared web server.
I have to send email to site users. I have written the all required code, I am sending mail from "info@mysitename.com" to yahoo or gmail but having the following exception.
Security Exception
Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.
Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Net.Mail.SmtpPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
Line 41: objEmail.Priority = MailPriority.Normal;
Line 42:
Line 43: SmtpClient smtpClient = new SmtpClient(smtpServer, Convert.ToInt32(port));
Line 44: System.Net.NetworkCredential basicAuthenticationInfo = new System.Net.NetworkCredential(fromAddress, pwd);
Line 45:
Thanks
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Dot-Net-Dev wrote: ine 43: SmtpClient smtpClient = new SmtpClient(smtpServer, Convert.ToInt32(port)); Line 44:
Everything is pretty self explanatory. The port that you are trying to use to send emails is blocked by your IT team. You need to talk to them and get it unblocked.
Further make sure you have configured SMTP configuration in Web.Config:
<system.net>
<mailSettings>
<smtp from="abc@somedomain.com">
<network host="somesmtpserver" port="25" userName="name" password="pass" defaultCredentials="true" />
</smtp>
</mailSettings>
</system.net>
If needed, have a look at this Microsoft Video tutorial: Use ASP.NET to Send Email from a Web Site [^]
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