[英]Cannot Bind Value to Dropdownlist
Why can't I binding value to the dropdownlist? 为什么我不能将值绑定到下拉列表? It always return message: DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'Name'.
它总是返回消息: DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'Name'.
I have a dropdownlist: 我有一个下拉列表:
<asp:DropDownList ID="Parameter_Dropdownlist" runat="server">
</asp:DropDownList>
Then on code-behind: 然后在代码后面:
If myCEConnection.State = ConnectionState.Closed Then
Try
myCEConnection.Open()
Catch
Return
End Try
End If
Dim reader As SqlCeDataReader
Dim myCommand As SqlCeCommand = myCEConnection.CreateCommand()
myCommand.CommandText = "SELECT Name, Code FROM Room"
reader = myCommand.ExecuteReader()
DT.Load(reader)
DDL.DataSource = DT
DDL.DataTextField = DT.Columns("Name").ColumnName.ToString()
DDL.DataValueField = DT.Columns("Code").ColumnName.ToString()
DDL.DataBind()
myCEConnection.Close()
How can I bind the value to the dropdownlist? 如何将值绑定到下拉列表? Please help. 请帮忙。 Thank you very much. 非常感谢你。
Try this, adding example :- 试试这个,添加示例:-
If myCEConnection.State = ConnectionState.Closed Then
Try
myCEConnection.Open()
Catch
Return
End Try
End If
Dim reader As SqlCeDataReader
Dim myCommand As SqlCeCommand = myCEConnection.CreateCommand()
myCommand.CommandText = "SELECT Name, Code FROM Room"
reader = myCommand.ExecuteReader()
DT.Load(reader)
DDL.DataSource = DT
DDL.DataTextField = DT.Columns(0).ColumnName.ToString()
DDL.DataValueField = DT.Columns(1).ColumnName.ToString()
DDL.DataBind()
myCEConnection.Close()
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