如何在Datagridview排序后获取更改的单元格或添加的行
本文关键字:单元格 添加 获取 Datagridview 排序 | 更新日期: 2023-09-27 18:19:28
我有一个数据源如下的DatagridView:
bindingSource = DataTable
dataGridView.DataSource = bindingSource
当编辑单元格或添加新行时,我会应用不同的格式样式,如果我对dataGridView进行排序,点击其中一个列标题,格式样式就会丢失,所以我的问题是:
对数据网格进行排序后,如何知道哪些单元格发生了更改或添加了?,这样我就可以重新应用格式样式
VB.Net或C#正常
我最终实现了所需的功能,向Datatable添加了一个新的字段/列,而不是为该字段中的整行只保留一个值,我存储了表示每个单元格的状态/样式的字符串,如",,E,,,E",因此此示例字符串将指示索引2和5处的单元格应该具有编辑过的样式。
我在CellValueChanged事件中创建/更改该字符串,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
并读取/应用CellFormatting事件中的样式,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
我希望这能帮助