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7.6

Use of Microsoft Excel hangs - how to clear ?

Asked by StevenK in C# Programming Language

Tags: hang

We're making use of MS Excel within a .NET C# application.
We have an issue whereby on closing the form / application which makes use of this - the instance of Excel is not cleared and still can be seen within 'Task Manager'.

private Excel.Application oXL;
private Excel.Workbook oWB;
private Excel.Worksheet oSheet;

We're making use of code like :
oXL = new Excel.ApplicationClass();
oWB = oXL.Workbooks.Add(xlStr);
oSheet = (Excel.Worksheet) sheets.get_Item(1);

On closing of the form we're using code such as :
if (oSheet != null)
{
  System.Runtime.InteropServices.Marshal.ReleaseComObject(oSheet);
}
if (oWB != null)
{
  System.Runtime.InteropServices.Marshal.ReleaseComObject(oWB);
}
if (oXL != null)
{
  System.Runtime.InteropServices.Marshal.ReleaseComObject(oXL);
}

However hard we try - we can't seem to get 'EXCEL.EXE' to be removed from the 'Task Manager'

Previously when we had a problem with MS Word we resolved it in a similar to above.  This doesn't seem to work for EXCEL mind you.  :(

Can anyone help us out with this one ?

Thanks in advance
Steve
[+][-]10/14/03 10:14 AM, ID: 9548671Accepted Solution

Your question has an Asker Certified™ answer! StevenK verified that this solution worked for them--which means it will likely work for you, too. Click to view the solution free for 30-days now.

About this solution

Zone: C# Programming Language
Tags: hang
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Solution Provided By: bacon7181
Participating Experts: 1
Solution Grade: B
 
 
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