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[英](C#) DataGridView: How to get Selected Count with cells AND rows?
[英]How to get the changed cells or added rows after Datagridview Sort
我有一個帶有數據源的DatagridView,如下所示:
bindingSource = DataTable
dataGridView.DataSource = bindingSource
當編輯單元格或添加新行時,我應用了另一種格式設置樣式;如果我對dataGridView進行排序,則單擊了列標題之一,則格式設置樣式丟失了,所以我的問題是:
在對datagridview排序之后,我如何知道哪些單元格已更改或添加了,所以我可以重新應用格式設置樣式
VB .Net或C#可以
最后,我實現了所需的功能,向數據表中添加了一個新的字段/列,並且對該字段中的整個行僅保留一個值,我存儲了表示每個單元格的狀態/樣式的字符串,例如“ ,, E ,, E”因此此示例字符串將指示索引2和5的單元格應具有已編輯的樣式。
我在CellValueChanged事件中創建/更改該字符串,示例:
Private Sub DataGridView_CellValueChanged(sender As System.Object, e As DataGridViewCellEventArgs) Handles DataGridView.CellValueChanged
If e.RowIndex = -1 Or IsNothing(DataGridView.CurrentCell) Then
Return
End If
Dim cellPosition As Short = DataGridView.CurrentCell.ColumnIndex
Dim Styles(25) As String
Dim stylesCell = DataGridView.Rows(e.RowIndex).Cells("CellStyleDescriptor").Value
If Not IsDBNull(stylesCell) And _
Not IsNothing(stylesCell) Then
Styles= Split(stylesCell, ",")
End If
If IsDBNull(DataGridView.Rows(e.RowIndex).Cells("Id").Value) Then
For i As Integer = 0 To 25 'New row is being added
Styles(i) = "N"
Next
Else
Styles(cellPosition) = "E" 'Edited/Modified Cell
End If
DataGridView.Rows(e.RowIndex).Cells("CellStyleDescriptor").Value = String.Join(",", String)
End Sub
並讀取/應用CellFormatting事件中的樣式,示例:
Private Sub DataGridView_CellFormatting(sender As System.Object, e As DataGridViewCellFormattingEventArgs) Handles DataGridView.CellFormatting
If e.RowIndex = -1 Or e.ColumnIndex = -1 Then
Return
End If
Dim styles(25) As String
styles = Split(DataGridView.Rows(e.RowIndex).Cells("CellStyleDescriptor").Value, ",")
Select Case styles(e.ColumnIndex)
Case "E" 'Edited cell
e.CellStyle.BackColor = modifiedStyle.BackColor
e.CellStyle.ForeColor = modifiedStyle.ForeColor
Case "N" 'New cell
e.CellStyle.BackColor = newStyle.BackColor
e.CellStyle.ForeColor = newStyle.ForeColor
End Select
End Sub
我希望這可以幫助別人
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