C# Discussion Boards - CodeProject

Errors happened when I tried to access a toolbar control from other thread. Please show me your all solutions.

15-Jul-07 21:17

Hi,

Please help me, I need to know how to get data from gridview selected row of another form

Thanx

Smart client

tarunbounthiyal15-Jul-07 20:50

tarunbounthiyal

15-Jul-07 20:50

Hi,

I have developed a an EXE that would be running on a web browser...At the same time i would like it to accessing the system resuorces. How should i go bout with giving the permissions to this particular piece of code...

goldenchance15-Jul-07 20:45

goldenchance

15-Jul-07 20:45

Hi All,

I have a toolbar control which is created by using Microsoft.Office.Core.CommandBar. All are good until I have some modification on it from other thread (I changed enable property of one control on this commandbar). The error is look like:

<br />
Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.Office.Core.CommandBarPopup'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{000C030A-0000-0000-C000-000000000046}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).<br />

If this command bar is a Form (or something extends Form), I can use the invoke action and delegate method to solve current problem. But it isn't. Are there any solutions for this issues?
Thanks for all suggestion solutions from you friends.

Banana

DataBase to XML

pavya_Cool15-Jul-07 20:28

pavya_Cool

15-Jul-07 20:28

Hi,

I am beginner, I want to convert My Database (MS Access) to XML files.

Anybody help me?

Pravin Rose | [Rose]

Re: DataBase to XML

Eduard Keilholz15-Jul-07 22:54

Eduard Keilholz

15-Jul-07 22:54

Erhm, the easiest way is to load all tables in you database in a DataTable object and write that to XML using the WriteXml() method, however working with XML this way is pretty time consuming having large amounts of data in your database...

.: I love it when a plan comes together :.
http://www.zonderpunt.nl

Security Exception Unhandled

Sallu174915-Jul-07 20:14

Sallu1749

15-Jul-07 20:14

Hi,
I am new to Reflection. I have written the following code...

using System;
using System.Reflection;
using System.Security.Permissions;

namespace reflection
{
class Program
{
[STAThread]

static void Main(string[] args)
{
Assembly myassembly = Assembly.LoadFrom("ReflectionDLL.dll");

Type [] mytypes = myassembly.GetTypes();

foreach (Type type in mytypes)
{
Console.WriteLine(type.FullName);
}

}
}
}

and I am getting the following exception.

System.Security.SecurityException was unhandled
Message="Request for the permission of type 'System.Security.Permissions.UIPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed."
Source="mscorlib"
GrantedSet="<permissionset class="\"System.Security.PermissionSet\"\r\nversion=\"1\"">\r\n<ipermission class="\"System.Security.Permissions.FileDialogPermission," mscorlib,="" version="2.0.0.0," culture="neutral," publickeytoken="b77a5c561934e089\"\r\nversion=\"1\"\r\nAccess=\"Open\"/">\r\n<ipermission class="\"System.Security.Permissions.IsolatedStorageFilePermission," mscorlib,="" version="2.0.0.0," culture="neutral," publickeytoken="b77a5c561934e089\"\r\nversion=\"1\"\r\nAllowed=\"ApplicationIsolationByUser\"\r\nUserQuota=\"512000\"/">\r\n<ipermission class="\"System.Security.Permissions.SecurityPermission," mscorlib,="" version="2.0.0.0," culture="neutral," publickeytoken="b77a5c561934e089\"\r\nversion=\"1\"\r\nFlags=\"Execution\"/">\r\n<ipermission class="\"System.Security.Permissions.UIPermission," mscorlib,="" version="2.0.0.0," culture="neutral," publickeytoken="b77a5c561934e089\"\r\nversion=\"1\"\r\nWindow=\"SafeTopLevelWindows\"\r\nClipboard=\"OwnClipboard\"/">\r\n<ipermission class="\"System.Security.Permissions.UrlIdentityPermission," mscorlib,="" version="2.0.0.0," culture="neutral," publickeytoken="b77a5c561934e089\"\r\nversion=\"1\"\r\nUrl=\"file:///H:/dot" net="" practice="" projects="" reflection="" bin="" debug="" reflection.exe\"="">\r\n<ipermission class="\"System.Security.Permissions.ZoneIdentityPermission," mscorlib,="" version="2.0.0.0," culture="neutral," publickeytoken="b77a5c561934e089\"\r\nversion=\"1\"\r\nZone=\"Internet\"/">\r\n<ipermission class="\"System.Drawing.Printing.PrintingPermission," system.drawing,="" version="2.0.0.0," culture="neutral," publickeytoken="b03f5f7f11d50a3a\"\r\nversion=\"1\"\r\nLevel=\"SafePrinting\"/">\r\n\r\n"
PermissionState="<ipermission class="\"System.Security.Permissions.UIPermission," mscorlib,="" version="2.0.0.0," culture="neutral," publickeytoken="b77a5c561934e089\"\r\nversion=\"1\"\r\nUnrestricted=\"true\"/">\r\n"
RefusedSet=""
Url="file:///H:/dot net practice projects/reflection/reflection/bin/Debug/reflection.EXE"
StackTrace:
at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.runTryCode(Object userData)
at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()

can anyone help me out plez...

Re: Security Exception Unhandled

Sallu174915-Jul-07 22:16

Sallu1749

15-Jul-07 22:16

no one knows the answer Frown | :(

Re: Security Exception Unhandled

Malcolm Smart16-Jul-07 2:21

Malcolm Smart

16-Jul-07 2:21

Have you tried anything to resolve the issue or simply got the exception and posted it here?

It looks like you program is attempted to load an EXE. The exception is security related. What permsissions are set on the EXE? Does the security context the calling application is running under have the relevant permission on the target EXE to do what you are trying to do.

Actualy, what are you trying to do? You've just code dumped.

"More functions should disregard input values and just return 12. It would make life easier." - comment posted on WTF

Re: Security Exception Unhandled

mav.northwind16-Jul-07 4:14

mav.northwind

16-Jul-07 4:14

Hi!

MSDN has a quite extensive documentation about .NET security. This is definitively worth reading, otherwise you won't understand the answers you'll be given.

From your stack trace it seems as if the application is running from a network share. By default, CAS policies grant FullTrust only to applications running from the MyComputer zone, so either copy the files over to your local computer or adjust CAS policies accordingly.

Regards,
mav

--
Black holes are the places where God divided by 0...

Get value from other form variable

Edwin Syarief15-Jul-07 18:24

15-Jul-07 18:24

Hi,

I'm a beginner, so please help me.

I want to know how to get value from other form variable or other form control, from our form. Thanx

Regard,

Edwin46

I.explore.code15-Jul-07 18:53

I.explore.code

15-Jul-07 18:53

hi,
if u have one form as form1 and other as form2 and u want to show data from form1 to form2 then u can pass the values from form1 through the overloaded contructor of the form2.In form1 u could public properties to hold values for passing and then in the constructor pass these prop vals.I hope its clear.

Edwin Syarief15-Jul-07 19:22

15-Jul-07 19:22

Thanx a lot

regard

Edwin46

Ravi Bhavnani15-Jul-07 18:54

Ravi Bhavnani

15-Jul-07 18:54

To get the value of a variable "V" in form "X" from form "Y", expose V as a public property in X, store a reference to an instance of X in Y, and access it. For example:

public class X : Form
{
  // The public property
  public int V {
    get { return v; }
  }
 
  // Private member variable
  int v = 0;
  ...
}
 
public class Y : Form
{
  // Reference to instance of form X
  X x;
 
  void someMethod()
  {
    // x must have been properly initialized!
    int valueOfVinFormX = x.V;
  }
}

While this is probably the easiest way, it's not the recommended method of accessing data in other forms. But since you're a beginner, I decided to post a simple and direct answer.

/ravi

This is your brain on Celcius
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Edwin Syarief15-Jul-07 19:23

15-Jul-07 19:23

Thanx this is very helpfull

regard

Edwin46

T.EDY15-Jul-07 19:23

T.EDY

15-Jul-07 19:23

you should try make a public class that returned a control u want to be call in another form Smile | :)

Edwin Syarief15-Jul-07 19:25

15-Jul-07 19:25

Can U give me an example, Please. Thanx a lot

regard

Edwin46

Customizing the drag-over cursor

T.EDY15-Jul-07 19:34

T.EDY

15-Jul-07 19:34

for example in form 1:

public DataGridView DataGridView1
{
get { return MyDataGridiew; }
}

and in form 2 you can call MyDataGridview

Hope it solve your problems Smile | :)

Regard,

TCim

jozsurf15-Jul-07 16:51

jozsurf

15-Jul-07 16:51

Hi all,

I'm currently coding an enhancement to a drag & drop feature where it is now possible to invoke a second drag & drop mode. A colleague has suggested that it would be be aesthetically more pleasing if I use a different drag cursor when in the new mode. Some research has revealed that overriding the OnGiveFeedback function is the way to go; however on playing around with cursors and such I've encountered a problem for which I have not been able to locate a solution: the default cursor for a Move or Copy operation doesn't appear to be available from the places I would expect cursors to be (or perhaps I'm not looking in the right places...). Does anyone know where I can get it when I am in the gfbevent.UseDefaultCursors = false; state?

cheers!

Eduard Keilholz15-Jul-07 22:51

Eduard Keilholz

15-Jul-07 22:51

Code snippet :

<br />
        private void lstFilesOnDisc_GiveFeedback(object sender, GiveFeedbackEventArgs e)<br />
        {<br />
            e.UseDefaultCursors = false;<br />
            if (e.Effect == DragDropEffects.Copy)<br />
            {<br />
                this.Cursor = curDragging;<br />
            }<br />
            else<br />
            {<br />
                this.Cursor = curNoDrop;<br />
            }<br />
        }<br />

.: I love it when a plan comes together :.
http://www.zonderpunt.nl

jozsurf15-Jul-07 23:09

jozsurf

15-Jul-07 23:09

Hi Eduard,

Thanks for your reply. It looks like curDragging is a custom cursor that was added to the project's resources. Is this correct?

I am trying to avoid using custom cursors if possible. It seems a little silly to me that I have to add a custom cursor for something which already comes with Windows/.NET!!

cheers!

Eduard Keilholz15-Jul-07 23:14

Eduard Keilholz

15-Jul-07 23:14

Yep, in fact I use custom cursors which come from resources, however you can also use a cursor from the Cursors collection in .NET... The snippet is only meant to show you how to change the cursor while drag&dropping...

.: I love it when a plan comes together :.
http://www.zonderpunt.nl