繁体   English   中英

Datagridview Sort之后如何获取更改的单元格或添加的行

[英]How to get the changed cells or added rows after Datagridview Sort

我有一个带有数据源的DatagridView,如下所示:

bindingSource = DataTable
dataGridView.DataSource = bindingSource

当编辑单元格或添加新行时,我应用了另一种格式设置样式;如果我对dataGridView进行排序,则单击了列标题之一,则格式设置样式丢失了,所以我的问题是:

在对datagridview排序之后,我如何知道哪些单元格已更改或添加了,所以我可以重新应用格式设置样式

VB .Net或C#可以

最后,我实现了所需的功能,向数据表中添加了一个新的字段/列,并且对该字段中的整个行仅保留一个值,我存储了表示每个单元格的状态/样式的字符串,例如“ ,, E ,, E”因此此示例字符串将指示索引2和5的单元格应具有已编辑的样式。

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

我希望这可以帮助别人

暂无
暂无

声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.

 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM