Search datagridview on user keypress

Question

I\'m trying to select the first row where the cell value starts with the same keychar the user pressed. That\'s the part that is giving me trouble.

Here\'s how I\'m hand

Answer 1

I use this in VB.NET. You can use http://www.developerfusion.com/tools/ to convert to C Sharp.

I wrote a method that will select row letter typed. The function is called in the KeysPress event handler of the DataGridView.

Method:

'user types letter in dgv, method will select the column starting with that letter if it exists or else next letter existing in dgv
Public Shared Sub GoToLetterTypedInDataGridView(ByVal dgv As DataGridView, ByVal columnName As String, ByVal columnPosition As Integer, ByVal letterTyped As Char)
    Try
        Dim dt As DataTable = dgv.DataSource
        Dim letter As Char = letterTyped
        Dim dv As DataView = New DataView(dt)
        Dim hasCount As Boolean = False

        While (Not hasCount)
            dv.Sort = columnName
            dv.RowFilter = columnName & " like '" & letter & "%'"
            If dv.Count > 0 Then
                hasCount = True
                Dim x As String = dv(0)(columnPosition).ToString()
                Dim bs As New BindingSource
                bs.DataSource = dt
                dgv.BindingContext(bs).Position = bs.Find(columnName, x)
                dgv.CurrentCell = dgv(0, bs.Position)
            Else
                If letter = "z" Then
                    letter = "a"
                ElseIf letter = "Z" Then
                    letter = "A"
                Else : letter = Chr(Asc(letter) + 1)
                End If
            End If
        End While
    Catch ex As Exception
        Dim stackframe As New Diagnostics.StackFrame(1)
        Throw New Exception("An error occurred in routine, '" & stackframe.GetMethod.ReflectedType.Name & "." & System.Reflection.MethodInfo.GetCurrentMethod.Name & "'." & Environment.NewLine & "  Message was: '" & ex.Message & "'")
    End Try
End Sub

Then to call:

Private Sub dgvNew_KeyPress(sender As Object, e As System.Windows.Forms.KeyPressEventArgs) Handles dgvNew.KeyPress
Try
    If dgvNew.RowCount > 0 Then
        GoToLetterTypedInDataGridView(dgvNew, "columnName", 0, e.KeyChar)
    End If
Catch ex As Exception
    Dim stackframe As New Diagnostics.StackFrame(1)
    Throw New Exception("An error occurred in routine, '" & stackframe.GetMethod.ReflectedType.Name & "." & System.Reflection.MethodInfo.GetCurrentMethod.Name & "'." & Environment.NewLine & "  Message was: '" & ex.Message & "'")
End Try

End Sub

Hope this helps! Amber