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On the Combox1 Selectedindexchanged Event (when you select a Value)
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
foreach (Control tb in this.Controls)
{
if (tb.Name == comboBox1.Text )
tb.Visible = false;
}
}
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Try:
foreach (Control c in Controls)
{
TextBox t = c as TextBox;
if (t != null)
{
t.Hide();
}
}
If you want to select the text box(es) to hide in the ComboBox, then assign a numeric value to each TextBox.Tag property. You can then compare this to the numeric value in your combo box before deciding if you should hide or not.
Don't forget to reveal ones you have hidden already... 
Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.
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This seems a fact unfamiliar to a lot of people, however even in WinForms you can easily get at a control by its name, like this:
Control c=this.Controls[name];
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I'd forgotten that...
Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.
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Ain't that so.
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Don't bother - he is posting this in every forum he can find.
Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.
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Dear All --
Go through the code below. Pour in your valuable suggestions.
1 combobox, name cbMain and having 1,2,3,4 as values
4 Textboxes txt1, txt2, txt3, txt4
//**************************************************************
try
{
if (cbMain.SelectedItem.ToString() == "1")
{
txt2.Hide();
txt3.Hide();
txt4.Hide();
}
else if (cbMain.SelectedItem.ToString() == "2")
{
txt2.Show();
txt3.Hide();
txt4.Hide();
}
else if (cbMain.SelectedItem.ToString() == "3")
{
txt2.Show();
txt3.Show();
txt4.Hide();
}
else if (cbMain.SelectedItem.ToString() == "4")
{
txt2.Show();
txt3.Show();
txt4.Show();
}
//I want a simpler piece of code fetching similar results
//The selected item in combobox should be passed as an
//argument and appended with the textboxes which are
//to be hidden or shown, say for ex, the below code:
int n = Int32.Parse(cbMain.SelectedItem.ToString());
for (int i = 1; i <= n; i++)
{
//("txt" + i).Show();
//What line will make the trick
}
for (int i = n+1; i <= cbMain.Items.Count; i++)
{
//("txt" + i).Hide();
//What line will make the trick
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
cheers
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Luc won't read that!
Edit it, and use the "Code block" widget to put <pre>...</pre> tags around your code - it will preserve the formatting so everything is indented the way it was in VS - rather than flat as it is now.
Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.
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OriginalGriff wrote: Luc won't read that!
Right. There are minimum quality levels I don't want to cross. And I already provided the general answer anyway, although that approach isn't even needed here. Something like
txt1.Visible=cbMain.Text=="1";
txt2.Visible=cbMain.Text=="2";
...
would probably suffice. No ifs, no fors.
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Luc --
Say you have 100 textboxes or controls to be hidden acc. to choice, then will you write 100 statements or probably even more ?
cheers
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thomforum wrote: then will you...
No.
I never write 10 or more similar statements. They invented loops for such situations.
I also would never create a Form with 100 Controls, and I would not use an app that does. It is pure madness.
I did answer your original question. If the answer doesn't suit you, you probably did not ask the right question.
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Luc --
My apologies, on not seeing your first post. Well, that covers my requirement.
cheers
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Hi,
I have been facing an issue while using CDOEXM.dll from my .NET Framework 2.0 code (written in C#). We are trying to create a mailbox on an Exchange Server (which is 2003). We have checked for correctness of the code in terms of NULL value etc. The code which gives the error is below:
CDOEXM.IMailboxStore mailbox;
mailbox = (IMailboxStore)User.NativeObject;
mailbox.CreateMailbox(maildb);
The error message that we get is:
Unable to cast COM object of type 'System.__ComObject' to interface type 'CDOEXM.IMailboxStore'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{25150F41-5734-11D2-A593-00C04F990D8A}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))
I would like to emphasize that the very same code has been running on .NET Framework 1.1 without any issues. I understand that there is a typecasting issue, but I am unable to understand that how to resolve this.
Any help will be much appreciated for this long drawn issue. Please let me know if you would like to get any more information from me.
Cheers,
Som
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I found this sentence in this[^] article: "This cast does not succeed at run time if CDOEXM is not installed on a computer". Have you checked that?
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I checked in the Global Assembly Cache, but could not find it. I am referencing that DLL as a private assembly. Is there any other way to check if it is installed on the machine?
N.B.: This code used to run when in .NET Framework 1.1 on the same machine and on the very same configuration. So it is a bit concerning as to how it used to run if the CDOEXM.dll was not installed? This makes me think if there is any known issue with .NET Framework 2.0 and CDOEXM.dll? Are you aware of any?
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Since CDOEXM.dll is COM it is not a suprise that you did not find it in the GAC. I think you might try to remove the reference of your project, delete de previous interop assembly you had and, then, add the reference again. This should create a new interop assembly and maybe your problem will disappear.
The best I have found about this topic is this[^], which you will probably know. It says that CDOEXM needs MS Exchange Administrative Tools to work properly.
Maybe there is an issue with .NET framework 2.0 and CDOEXM, as you say, but I am not aware of any. Sorry I cannot give you any further information.
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How to call my disk part commands from c# and redirect output to xml file.
Urgent.
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To call Diskpart commands and redirect its output you can use the Process[^] class.
To parse the output to a XML file you have several classes at System.Xml[^] namespace.
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hi everyone..
I want a tool to plot real time graph fr .net platform.The data which has to be plotted is continuously coming in some time interval.Is there any tool available?
Also Performance issue is there.Performance also matters when I am using the tool.
Thanks in adv...
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Although there may be such a library I am not aware of any.
There are, however, plenty of graphing libraries out there, Microsoft even has their own[^].
It seems to me that it would not be difficult to handle the data input and pass it to any of the available controls/libraries.
If this is not useful to you you might edit your question to indicate how the data arrives since it is not currently clear if it arrives from t'internet, down a serial wire or by mail. 
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”
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actually data is coming from a hardware(or say lower layer) through LAN.Hope it would be clear.
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You have answered the wrong person.
Please repost your answer to the OP.
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”
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He didn't answer anything. He's dropping this same note all over the site.
He just spamming...
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