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Why does this code give this error: "Specified cast is not valid"?
<br />
foreach(RadioButton r_button in groupBox2.Controls)<br />
{<br />
Console.WriteLine(r_button.Name.ToString());<br />
}<br />
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Maybe you have something other than a RadioButton in groupBox2?
If so, try
foreach ( Control control in ... )
{
if ( control is RadioButton ) ...
}
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Thanks!
This worked great!
<br />
RadioButton r_button = null;<br />
<br />
foreach(Control control in groupBox2.Controls)<br />
{<br />
if ( control is RadioButton )<br />
{<br />
r_button = ((RadioButton)control);<br />
Console.WriteLine(r_button.Text.ToString());<br />
}<br />
} <br />
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Here's a more concise version that also performs better:
foreach(Control control in groupBox2.Controls)
{
RadioButton radioButtonControl = control as RadioButton;
if(radioButtonControl != null)
{
r_button = radioButton;
}
}
Last modified: 1hr 8mins after originally posted -- oops, meant to say != null there, thanks colin
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The following line errors out.
<br />
RadioButton radioButtonControl = control as RadioButtonControl;<br />
I changed "RadioButtonControl" to RadioButton, but the if statement gives the following error.
Cannot implicitly convert type 'System.Type' to 'bool'
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The if statement must evaluate to a boolean. The code you were given shows a mistake many developers that code in both C++ and C# make.
if (radioButtonControl != null)...
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I don't know why I didn't know that, I use that all the time!
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Colin Angus Mackay wrote: a mistake many developers that code in both C++ and C# make.
fixed
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Hello friends!
I want to see source code of a simple accountancy or inventory software(that is written by C#.NET),
Do you know how can I find that?
Thanks
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I want to see BigFoot. I think we both have the same chance.
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bigfoot
as for the C# code you have a much chance of seeing Britney's left boobie.
(crosses fingers and hopes for a reply :P)
i'm sorry i just couldn't help myself
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ad3z wrote: bigfoot
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your best bet would be to try Source Forge or something like that
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Hi,
I have a web service method call RegisterMember() that takes some inputs from the client app. do some processing and then send the result to an external url (http://someexternalurl/RegisterMember.aspx), which would registered the member on their database.
I am using HttpWebRequest to POST the data to the external url. I set up a test environment and run my web service. The result "The member has been registered" is returned to the client app. but nothing happens on the POST request. That is, no record were inserted into the database. Is my syntax for HttpWebRequest correct? Is there a security setting on the Web Service? If I were to invoke the url (http://localhost/test/RegisterMember.aspx?fname=test&lname=test) directly, the record get created so I don't think that is the problem.
My code for the web service is shown below:
<pre>
[WebMethod]
public string RegisterMember(string fname, string lname)
{
//process the data here ...
//POST data to external url
string cSeparator = "&";
ASCIIEncoding encoding = new ASCIIEncoding();
string cPostData = "Fname="+ fname + cSeparator + "Lname=" + lname;
byte[] data = encoding.GetBytes(cPostData);
// Prepare web request...
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create("http://localhost/test/RegisterMember.aspx");
myRequest.Method = "POST";
myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentLength = data.Length;
Stream newStream = myRequest.GetRequestStream();
// Send the data.
newStream.Write(data, 0, data.Length);
newStream.Close();
//returns to client app
return ("The member has been registered");
}
</pre>
Thanks,
Khuan
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hi all,
one more question concerning dataGrids.
How can i resize the table contained in the dataGrid so that it fills the dataGrid till it borders only. I mean to fit in the width not height.
i need it programmaticaly
thanks in advance,
Help me cz i will help you when you need 
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Have you tried width 100%?
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HI
I need to make a proxy website for my project. Ny idea how to do that?
Sankalp Verma
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Can you please explain what the hell a proxey website is?
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i am also want to know how to use proxy in your application.
i want to write a program with a proxy function.
who can tell me how to do this?
thx
I think therefore I am
--~--~---------~--~----~------------~-------~--~----~
My Blog and Website：
http://www.cnblogs.com/pinzui/
http://www.pinzui.cn
http://jnlinux.org
--~--~---------~--~----~------------~-------~--~----~
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What exactly do you mean by a proxy website.
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a website that provides an http proxy. Kidiot's use them to try and bypass thier schools netnanny software, and then wonder why they got busted when the bigbrotherware finds pron in thier IE cache.
--
Rules of thumb should not be taken for the whole hand.
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That's what I thought, but I was hoping (against all hope) that I was wrong.
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Is the OP's bio any indication of his age?
Dave Kreskowiak
Microsoft MVP - Visual Basic
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Until you mentioned it I didn't think to look. I just posted on the most likely assumption. The bio did probably rule out an IT person trying (foolishly) to bypass his employers netnanny software though.
--
Rules of thumb should not be taken for the whole hand.
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