Public Class frmMainCetegory
Private Sub frmMainCetegory_Load(sender As Object, e As EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'PosDatabaseDataSet.tblItemMainCategory' table. You can move, or remove it, as needed.
Me.TblItemMainCategoryTableAdapter.Fill(Me.PosDatabaseDataSet.tblItemMainCategory)
Me.CenterToParent()
Me.btnAddNew.Select()
End Sub
Private Sub btnAddNew_Click(sender As Object, e As EventArgs) Handles btnAddNew.Click
Try
Me.TblItemMainCategoryBindingSource.AddNew()
Me.txtMainCategory.Select()
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Private Sub btnSave_Click(sender As Object, e As EventArgs) Handles btnSave.Click
Try
If Me.txtMainCategory.Text = "" Then
MsgBox("Please Enter Main Category Name!", vbInformation)
Exit Sub
End If
Me.imgMainCategoryImage.Image.Save(Application.StartupPath & "\Images\" & Me.txtMainCategory.Text & ".jpeg", System.Drawing.Imaging.ImageFormat.Jpeg)
Me.TblItemMainCategoryBindingSource.EndEdit()
Me.TblItemMainCategoryTableAdapter.Update(Me.PosDatabaseDataSet.tblItemMainCategory)
Me.TblItemMainCategoryTableAdapter.Fill(Me.PosDatabaseDataSet.tblItemMainCategory)
Me.btnAddNew.Select()
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Private Sub btnDelete_Click(sender As Object, e As EventArgs) Handles btnDelete.Click
Try
Dim MainCatName As String
MainCatName = Me.TblItemMainCategoryDataGridView.CurrentRow.Cells("MainCategoryName").Value
If Me.TblItemMainCategoryDataGridView.Rows.Count - 1 > 0 Then
'check before delting, if this main category is used in sub category then It can not be deleted.
Dim I As Integer
I = frmSubCategories.TblItemSubCategoryTableAdapter.qryCountMainCategoryUnderSubCategory(MainCatName)
If I > 0 Then
MsgBox(MainCatName & " is used under Sub Category(s), Please Delete Sub Category(s) First!", vbOK)
Exit Sub
End If
End If
Me.TblItemMainCategoryBindingSource.RemoveCurrent()
Me.TblItemMainCategoryTableAdapter.Update(Me.PosDatabaseDataSet.tblItemMainCategory)
Me.TblItemMainCategoryTableAdapter.Fill(Me.PosDatabaseDataSet.tblItemMainCategory)
'Delete the Main Category Image if this exists
If System.IO.File.Exists(Application.StartupPath & "\Images\" & MainCatName & ".JPEG") Then
System.IO.File.Delete(Application.StartupPath & "\Images\" & MainCatName & ".JPEG")
MsgBox("Image Deleted Successfull")
End If
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Private Sub btnBrowse_Click(sender As Object, e As EventArgs) Handles btnBrowse.Click
Try
Me.OpenFileDialog1.Filter = "Bitmaps(*.JPG, *.PNG, *.JPEG, *.BMP, *.TIF, *.GIF, *.TIFF)|"
Me.OpenFileDialog1.FileName = ""
If OpenFileDialog1.ShowDialog(Me) = DialogResult.OK Then
Dim img As String = Me.OpenFileDialog1.FileName
Me.imgMainCategoryImage.Image = System.Drawing.Bitmap.FromFile(img)
Me.btnSave.Select()
Else
End If
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Private Sub TblItemMainCategoryDataGridView_SelectionChanged(sender As Object, e As EventArgs) Handles TblItemMainCategoryDataGridView.SelectionChanged
Try
Me.imgMainCategoryImage.Image = DirectCast(Image.FromFile(Application.StartupPath & "\Images\" & Me.TblItemMainCategoryDataGridView.CurrentRow.Cells("MainCategoryName").Value & ".JPEG").Clone(), Image)
' Me.imgMainCategoryImage.Image = System.Drawing.Bitmap.FromFile(Application.StartupPath & "\Images\" & Me.TblItemMainCategoryDataGridView.CurrentRow.Cells("MainCategoryName").Value & ".JPEG")
Catch ex As Exception
Me.imgMainCategoryImage.Image = My.Resources.imgEmpty 'if image path not found then select empty image
End Try
End Sub
Private Sub btnClose_Click(sender As Object, e As EventArgs) Handles btnClose.Click
Me.Close()
End Sub
Конечный класс
Приведенный выше код выдает мне сообщение об ошибке:
изображение используется в другом процессе, его нельзя удалить
когда я удаляю файл изображения.Изображение присваивается PictureBox с событием выбора DataGridView.Поскольку я удалил строку DataGridView, как показано в приведенном выше коде, он меняет изображение в PictureBox.
Здесь я не могу удалить файл изображения, связанный с удаленной строкой.
Пожалуйста, направьте идайте мне знать, если вам понадобится дополнительная информация.