gridview在检查数据冲突时给出错误，如果每件事情都好，它应该删除并显示有关删除操作的标签 [英] gridview gives me error when m checking data conflict and if every thing is good it should delete and display a label about delete operation

问题描述

gridview给出了错误，如果每件事情都好，它应该删除并显示关于删除操作的标签

但是在正常的删除操作中它会给出错误。我不知道它是什么。



指数超出范围。必须是非负数且小于集合的大小。

参数名称：index

i已将此代码从c＃转换为来自developerfusion.com的vb帮助我发现错误

gridview gives me error when m checking data conflict and if every thing is good it should delete and display a label about delete operation
but on normal delete operation it give error . I dont knw what it is.

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
i have converted this code code from c# to vb from developerfusion.com help me to find error

Protected Sub GridView1_RowDeleted(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewDeletedEventArgs) Handles GridView1.RowDeleted
        lblmessage.Visible = True
        If (e.AffectedRows > 0) Then
            lblmessage.Text = "Company row with companyID = """ + e.Keys(0).ToString() + """ is successfully deleted "
            lblmessage.ForeColor = System.Drawing.Color.Navy
        Else
            lblmessage.Text = "Company row with companyID = """ + e.Keys(0).ToString() + """ is not deleted due to data conflict"
            lblmessage.ForeColor = System.Drawing.Color.Red
        End If
    End Sub

解决方案

简单。根据错误消息， e.Keys（0）不存在。你有一个没有元素的数组。

Simple. According to the error message, e.Keys(0) doesn't exist. You've got an array with no elements in it.

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