gridview删除问题,在线急等
在用户表里查询出所有信息,然后点击删除想把记录删除,为什么点击删除就会报错,提示 "
索引超出范围。必须为非负值并小于集合大小。
参数名: index "这是查询记录的代码
Public Sub linker()
Dim conn As New SqlConnection
Dim sql As String
conn.ConnectionString = "data source=192.168.31.199;initial catalog=kaoqin manager;user id=james5;password=james5; "
sql = "select * from denglu "
Dim cmd As New SqlCommand(sql, conn)
conn.Open()
Dim dr As New SqlDataAdapter(cmd)
Dim dl As New DataSet
dr.Fill(dl)
GridView1.DataSource = dl.Tables(0).DefaultView
GridView1.DataBind()
conn.Close()
End Sub
这是删除代码:
Protected Sub GridView1_RowDeleting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewDeleteEventArgs) Handles GridView1.RowDeleting
Dim sql As String
Dim id As Integer = GridView1.DataKeys(e.RowIndex).Value
sql = "delete from denglu where dengluNO= " & id
Dim conn As New SqlConnection
conn.ConnectionString = "data source=192.168.31.199;initial catalog=kaoqin manager;user id=james5;password=james5; "
Dim cmd As New SqlCommand(sql, conn)
conn.Open()
cmd.ExecuteNonQuery()
conn.Close()
Call linker()
End Sub
肯请大家帮忙解决
------解决方案--------------------你前台代码是不是定义了DataKeyField
后台是不是
int id = int.Parse(GridView1.DataKeys(e.RowIndex).ToString());
------解决方案--------------------Dim id As Integer = GridView1.DataKeys(e.RowIndex).Value
感觉问题应该出在这句上
其实你直接用e.keys(i).tostring就好了,记住要定义gridview 的datakeynames