在gridview中有问题 [英] have a problem in gridview
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问题描述
Hai,
实际上我想将一个网格列减去另一个网格列但我有这样的问题
参数'表达式'无法转换为'DBNull'类型
'我的代码
DataGridView1.Rows.Item(i).Cells(3).Value = Val(DataGridView1.Rows.Item(i).Cells( 4).Value) - Val(DataGridView1.Rows.Item(i).Cells(5).Value)
Hai,
Actually i want to subtract one grid column to another grid column but i have a problem like this
"Argument 'Expression' cannot be converted to type 'DBNull' "
it' my code
DataGridView1.Rows.Item(i).Cells(3).Value = Val(DataGridView1.Rows.Item(i).Cells(4).Value) - Val(DataGridView1.Rows.Item(i).Cells(5).Value)
推荐答案
尝试在调试时遵循您的代码,
i猜你试图减去一个或两个空单元格。
(例如5 - 没有 =错误)
您可以检查空单元格并将其替换为0.
希望这可以解决您的问题
Bert
Try to follow your code while you debug,
i guess you try to substract one or two empty cells.
(ex. 5 - nothing = ERROR)
You could check for empty cells and replace them with a 0.
Hope this solves your problem
Bert
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