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If your component is a UserControl then you should have no problem seeing it on the form when you drop it from the toolbox. It acts as any other .NET built-in component.
The component should be in a seperate project and should be a UserControl type.
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The UserControl does not look the same as the MainMenu. As for the MainMenu the main component is the one that sits in the yellow field below the actual form. From that, several controls on the form are created, one for every MenuItem.
I want to make a component (inherit from System.ComponentModel.Component) and by using code in the component I want to create several controls on the actual form at design time. Just like the MainMenu or the toolbar of VS 2005. The reason for this is that I want to manage several controls from one location, the component.
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The problem is: I want to use a for control sentence to control 16 lables,each time I want to change one lable's Text property.Suppose the 16 lables are lable1,lable2,lable3,...,lable16. What does the code should look like?
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hi momor
that will be for (i=1;i<=16;i++)
{
myLabel.Text = "Label" + i + "/n";
}
that would help
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Hi!Moustafa_,
Thank you very much!
But what I need is not to change one lable's Text property
for 16 times,but to change 16 lable's Text properties.I want to realize it with a for loop,and change one lable's Text property in each loop.In this case,what should my code look like?
Thank you again!
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for(int i=0; i < this.Controls.Count; i++)
if(this.Controls[i].GetType() == typeof(System.Windows.Forms.Label))
MessageBox.Show (this.Controls[i].Name);
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Hi!hatim_ali,
Thank you very much for your help!
I think your code give me much idear to work out my trouble.;)
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Hi!hatim_ali,
The lable I want to get within each for loop is specified.That is,within the first loop I want to get lable1,within the second loop I want to get lable2,within the third loop I want to get lable3,...,within the 16th loop I want to get lable16.And there are more than 16 lables in my C# project,so if I use your code I don't know which lable I will get.I think maybe use a array or a
enum which contains the 16 specified lables,but I just do not know what the array or enum's type should be and what the code look like.
I need your help!;)
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Hi
I have a C# application which makes use of an unmanaged C++ DLL.
Some of the DLL calls return pointers to dynamically allocated memory.
My question is this : can I release that memory with C# (and how) or do I have to release it in the context of the DLL - that is, call C++'s delete on the pointer) ?
I'd appreciate any kind of help with this.
thanks,
p.
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Hello,
Do you know how to set invisible column.
For example, There is a list view class, this has the following 4 columns.
user, password, class, data
And, I made other column, named check. I would like to hide this.
If you have some ideas, please tell me.
cheers,
yu-yu
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You can set the width of the column to 0. But be aware that if you allow the user to change the width of the columns it's possible to make your 'hidden' column visible.
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Another approach: Keep that "column" out of the listbox/listview.
a) Data Collection with 5 columns
b) VISIBLE list with 4 columns
c) If changes occur in the visible list (events), update the data collection accordingly. If you need data from the 5th column, retrieve it directly from your "in-memory"-data-collection.
Cheerio
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Hello,
Thank you for your advice.
Now, I will try them.
cheers,
yu-yu
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I have to use the SetupDiGetDeviceRegistryProperty API, some of its parameters are pointers,such as void*,int* and byte*.but C# compiler said that void* is pointer may only be used in an unsafe context.
what should I do?
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If an image is inserted in the RichTextBox at runtime, how to drag/move it inside the RichTextBox with the help of mouse, just like we can move any control on the form during design time.
Please guide
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I am trying to develope a small RTF writer to generate project report at runtime, with a limited RTF writing capability. RTF by default is only one page document, untill we intentionally put page breaks in it, on the other hand Project report consists of number of pages.
Thus, what should the criteria to decide page break insertion? How to keep track of page's empty area before inserting anything? Is there any way to identify exactly how many characters I can print before I run out of room in the current page.
RTF specification 1.6 to 1.8 doesn't give any example regarding this issue.
Please guide.
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Hi all,
I have a .h file that includes simple constant declarations.
I need those constants in a C# project, so I figured I can wrap those in a C++ .NET project and reference to it.
The problem is I can't do the simplest things.
Here is a sample:
public __gc class SmDefines
{
public String* getObjData() {return NFMDEFS_XML_VAL_DATA_OBJ;}
...
}
I tried everything: String, String*, but I alwyas get the error:
C2144: Syntax error: 'System::String' should be preceded with ':'
Does anybody know what is the matter? or if there's another way to do what I wanted.
Thanks!
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Has anybody tried implementing GLOBAL cbt hooks in c#?
I keep getting a .net framework runtime error as soon as the hook is activated...however it works fine LOCALY...
I just keep getting the command prompt screen with a "Runtime" error message i hate it!
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I just want to design a web control.
My object is,In the top of my control there is a ‘+’ sign with a title [ + Title Name].When the user click on the ‘+’ sign there is a drop down menu with a image box and the ‘+’ sign change to the ‘ – ‘.when the user click on ‘-‘ the image frame should go to up side and hide.
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hi i don't know any thing to help you except the control name and you can search it is name is nodeList or Node
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Hi,
How do I check whether the user has M$ Word installed, and how do I check which version of Word that the user has installed?
thanks 
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What I do is call Registry.LocalMachine.OpenSubKey to read the registry at:
"Software\Microsoft\Windows\CurrentVersion\App Paths\Winword.exe" and use regKey.GetValue to get the value of the key "Path"
If it returns null then word is not installed.
Otherwise it gives you the path to winword.exe and then you can call FileVersionInfo.GetVersionInfo to get the version number.
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How do i plot 2D LineGraph using GDI+ on Windows Form?
Chris
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You could search CodeProject for controls made by others. Some of those look really cool.
If you want to make it yourself:
Override the OnPaint method in your Control or Form class, get the Graphics object from the event arguments and play around with the DrawLine method.
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