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How can i delete Temp using fileStream in Vb.net

Discussion in 'Visual Basic ( VB )' started by mj_yusuf, May 22, 2008.

  1. mj_yusuf

    mj_yusuf New 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
     
  2. shabbir

    shabbir Administrator Staff Member

    In the temp folder you have some files which cannot be deleted which you are trying to delete it.
     
  3. shabbir

    shabbir Administrator Staff Member

    Moved to Visual Basic forum for better responses.
     
  4. mj_yusuf

    mj_yusuf New Member

    How can validate cell in datagridview Vb.net

    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.DataGridViewCellValidatingEventArgs) Handles dgvHeaderRemarks.CellValidating

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

    'dgvSupportingDocument.CurrentRow.Cells(1).Selected = 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
     
  5. mj_yusuf

    mj_yusuf New Member

    Hi Sabir
    I got a solution for that temp file deletion.

    Thanks for ur reply.
     
  6. mj_yusuf

    mj_yusuf New 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().Trim) 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
     

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