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在Datagridview中更改特定的行和列

[英]Change specific row and column in Datagridview

 原文  2015-03-13 09:05:24  4   1    vb.net/ winforms/ visual-studio-2010/ datagridview

问题描述

I want to change specific row and column in Datagridview. 我想更改Datagridview中的特定行和列。 when I enter specific data in column x it will return any specific value in column Y . 当我在x列中输入特定数据时，它将在Y列中返回任何特定值。 Otherwise data in column x will return value 7777 in column Y 否则， x列中的数据将在Y列中返回值7777

在此处输入图片说明

But when I run this code, there were nothing change in column Y : 但是，当我运行此代码时， Y列没有任何变化： 

Private Sub Table1DataGridView_CellEndEdit(sender As Object, e As System.Windows.Forms.DataGridViewCellEventArgs) Handles Table1DataGridView.CellEndEdit

    'For e.ColumnIndex + 1
    If e.ColumnIndex = 2 Then
        If Val(Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex).Value) = 5 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 5

        ElseIf Val(Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex).Value) = 7 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 7

        ElseIf Val(Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex).Value) = 1 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 6
            '1
        ElseIf Val(Table1DataGridView.Rows(1).Cells(2).Value) = 1.5 Then
            Table1DataGridView.Rows(1).Cells(e.ColumnIndex + 1).Value = 7.326
            '2
        ElseIf Val(Table1DataGridView.Rows(2).Cells(2).Value) = 2 Then
            Table1DataGridView.Rows(2).Cells(e.ColumnIndex + 1).Value = 6.374
            '3
        ElseIf Val(Table1DataGridView.Rows(3).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(3).Cells(e.ColumnIndex + 1).Value = 4.702
            '4
        ElseIf Val(Table1DataGridView.Rows(4).Cells(2).Value) = 2 Then
            Table1DataGridView.Rows(4).Cells(e.ColumnIndex + 1).Value = 1.321
            '5
        ElseIf Val(Table1DataGridView.Rows(5).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(5).Cells(e.ColumnIndex + 1).Value = 0.035
            '6
        ElseIf Val(Table1DataGridView.Rows(6).Cells(2).Value) = 4 Then
            Table1DataGridView.Rows(6).Cells(e.ColumnIndex + 1).Value = 0.205
            '7
        ElseIf Val(Table1DataGridView.Rows(7).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(7).Cells(e.ColumnIndex + 1).Value = 4.969
            '8
        ElseIf Val(Table1DataGridView.Rows(16).Cells(2).Value) = 4 Then
            Table1DataGridView.Rows(16).Cells(e.ColumnIndex + 1).Value = 1.588
            '9
        ElseIf Val(Table1DataGridView.Rows(17).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(17).Cells(e.ColumnIndex + 1).Value = 4.696
            '10
        ElseIf Val(Table1DataGridView.Rows(18).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(18).Cells(e.ColumnIndex + 1).Value = 0.866
            '11
        ElseIf Val(Table1DataGridView.Rows(19).Cells(2).Value) = 2 Then
            Table1DataGridView.Rows(19).Cells(e.ColumnIndex + 1).Value = 1.881
            '12
        ElseIf Val(Table1DataGridView.Rows(20).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(20).Cells(e.ColumnIndex + 1).Value = 4.702
            '13
        ElseIf Val(Table1DataGridView.Rows(21).Cells(2).Value) = 2 Then
            Table1DataGridView.Rows(21).Cells(e.ColumnIndex + 1).Value = 6.515
            '14
        ElseIf Val(Table1DataGridView.Rows(22).Cells(2).Value) = 1.5 Then
            Table1DataGridView.Rows(22).Cells(e.ColumnIndex + 1).Value = 6.92671744
        Else
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 7777

        End If
    End If

End Sub

Then, I try to change this code, but return some same value at column Y : 然后，我尝试更改此代码，但在Y列返回一些相同的值： 

Private Sub Table1DataGridView_CellEndEdit(sender As Object, e As System.Windows.Forms.DataGridViewCellEventArgs) Handles Table1DataGridView.CellEndEdit

    'For e.ColumnIndex + 1
    If e.ColumnIndex = 2 Then
        If Val(Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex).Value) = 5 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 5

        ElseIf Val(Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex).Value) = 7 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 7

        ElseIf Val(Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex).Value) = 1 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 6
            '1
        ElseIf Val(Table1DataGridView.Rows(1).Cells(2).Value) = 1.5 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 7.326
            '2
        ElseIf Val(Table1DataGridView.Rows(2).Cells(2).Value) = 2 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 6.374
            '3
        ElseIf Val(Table1DataGridView.Rows(3).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 4.702
            '4
        ElseIf Val(Table1DataGridView.Rows(4).Cells(2).Value) = 2 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 1.321
            '5
        ElseIf Val(Table1DataGridView.Rows(5).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 0.035
            '6
        ElseIf Val(Table1DataGridView.Rows(6).Cells(2).Value) = 4 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 0.205
            '7
        ElseIf Val(Table1DataGridView.Rows(7).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 4.969
            '8
        ElseIf Val(Table1DataGridView.Rows(16).Cells(2).Value) = 4 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 1.588
            '9
        ElseIf Val(Table1DataGridView.Rows(17).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 4.696
            '10
        ElseIf Val(Table1DataGridView.Rows(18).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 0.866
            '11
        ElseIf Val(Table1DataGridView.Rows(19).Cells(2).Value) = 2 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 1.881
            '12
        ElseIf Val(Table1DataGridView.Rows(20).Cells(2).Value) = 2.5 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 4.702
            '13
        ElseIf Val(Table1DataGridView.Rows(21).Cells(2).Value) = 2 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 6.515
            '14
        ElseIf Val(Table1DataGridView.Rows(22).Cells(2).Value) = 1.5 Then
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 6.92671744
        Else
            Table1DataGridView.Rows(e.RowIndex).Cells(e.ColumnIndex + 1).Value = 7777

        End If
    End If

End Sub

Thanks for the help! 谢谢您的帮助！

1 个解决方案

解决方案1
 1 已采纳  2015-03-13 09:29:54

If the DataGridView is databound, you need modify the databound object not the grid directly. 如果DataGridView是数据绑定的，则需要修改数据绑定的对象，而不是直接修改网格。 You can access that object through the DataBoundItem property: 您可以通过DataBoundItem属性访问该对象： 

Dim obj As MyObject = Table1DataGridView.CurrentRow.DataBoundItem
obj.MyProperty = newValue

just set MyObject and MyProperty as appropriate 只要适当设置MyObject和MyProperty

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