How can i delete Temp using fileStream in Vb.net

mj_yusuf's Avatar, Join Date: May 2008
Newbie Member
Hi

I try to delete system Temp file using this following method.

Public Sub DeleteTempFile()
Dim sTempFileName As String
For Each sTempFileName In Directory.GetFiles(GetTempDirectory())
System.IO.File.Delete(sTempFileName)
End Sub

Function GetTempDirectory() As String
Return Environment.GetEnvironmentVariable("TEMP")
End Function


But when i delete i get "IOException wad unhandled" error.

That error messge is: "The process cannot access the file 'C:\Documents and Settings\Administrator\Local Settings\Temp\29.tmp' because it is being used by another process."




Can anybody help me solution to solve this problem.
by
Yusuf
shabbir's Avatar, Join Date: Jul 2004
Go4Expert Founder
In the temp folder you have some files which cannot be deleted which you are trying to delete it.
shabbir's Avatar, Join Date: Jul 2004
Go4Expert Founder
Moved to Visual Basic forum for better responses.
mj_yusuf's Avatar, Join Date: May 2008
Newbie Member
Hi ,
Am using this following code my cell validating,This code if user leave empty row or if row got focus at empty cell it will prompt messagebox until user enter value.


but i need if user want to continue with empty value it allow to add new row or go to other tab.

Please help me...

TIA.

By
Yusuf.

Private Sub dgvHeaderRemarks_CellValidating(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellValidatingEve ntArgs) Handles dgvHeaderRemarks.CellValidating

If dgvHeaderRemarks.Columns(e.ColumnIndex).Name = "Remarks" Then
If e.FormattedValue IsNot Nothing AndAlso _
String.IsNullOrEmpty(e.FormattedValue.ToString().T rim) Then

'dgvSupportingDocument.CurrentRow.Cells(1).Selecte d = True

MessageBox.Show("HeaderRemarks Field cannot be empty.Please use delete row.", "HeaderRemarks", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)

dgvHeaderRemarks.CancelEdit()
e.Cancel = True
End If
End If
End Sub
mj_yusuf's Avatar, Join Date: May 2008
Newbie Member
Quote:
Originally Posted by shabbir
In the temp folder you have some files which cannot be deleted which you are trying to delete it.
Hi Sabir
I got a solution for that temp file deletion.

Thanks for ur reply.
mj_yusuf's Avatar, Join Date: May 2008
Newbie Member
Hi Sabir,

I have one more doubt in datagridview cell validating.I need to validate empty row.If user leave empty row i need to prompt messge to delete or enter value.

I am using this following code for my cell validation.But,is not set for my project.

Please help me.

Code is:
If dgvHeaderRemarks.Columns(e.ColumnIndex).Name = "Remarks" Then

'If e.FormattedValue IsNot Nothing Or _
If String.IsNullOrEmpty(e.FormattedValue.ToString().T rim) Then
MessageBox.Show("HeaderRemarks Field cannot be empty.Please use delete row.", "HeaderRemarks", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)

dgvHeaderRemarks.CancelEdit()
e.Cancel = True
End If
End If

How can solve this problem.

TIA