سلام دوست عزیز صبح بخیر میتونی از کد زیر استفاده کنی موفق باشی
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
Me.BindDataGrid()
dataGridView1.SelectionMode = DataGridViewSelectionMode.CellSelect
dataGridView1.MultiSelect = False
AddHandler dataGridView1.CellFormatting, AddressOf dataGridView1_CellFormatting
AddHandler dataGridView1.EditingControlShowing, AddressOf dataGridView1_EditingControlShowing
End Sub
Private Sub BindDataGrid()
Dim dt As DataTable = New DataTable()
dt.Columns.AddRange(New DataColumn() {New DataColumn("Name"), New DataColumn("Password")})
dt.Rows.Add("John Hammond", "password123")
dt.Rows.Add("Mudassar Khan", "123")
dt.Rows.Add("Suzanne Mathews", "78963")
dt.Rows.Add("Robert Schidner", "a@12@jhg")
Me.dataGridView1.DataSource = dt
End Sub
Private Sub dataGridView1_CellFormatting(ByVal sender As Object, ByVal e As DataGridViewCellFormattingEventArgs)
If dataGridView1.Columns(e.ColumnIndex).Index = 1 Then
If e.Value IsNot Nothing Then
e.Value = New String("*"c, e.Value.ToString().Length)
e.FormattingApplied = True
End If
End If
End Sub
Private Sub dataGridView1_EditingControlShowing(ByVal sender As Object, ByVal e As DataGridViewEditingControlShowingEventArgs)
Dim t As TextBox = TryCast(e.Control, TextBox)
If t IsNot Nothing Then
t.Text = CStr(dataGridView1.SelectedCells(0).Value.ToString ())
End If
End Sub
Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles button1.Click
Dim passwords As String = ""
For i As Integer = 0 To dataGridView1.Rows.Count - 1
passwords += dataGridView1.Rows(i).Cells(1).Value & vbLf
Next
MessageBox.Show(passwords)
End Sub
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