我有一个包含保存 ImageButton 的表单中的 gridview。我想创建一个客户端 CustomValidator 来检查网格是否为空。如果它是空的,那么我想向用户抛出一条错误消息。
这是我的代码。在“Save_btn_Click”事件中,我检查页面是否有效:
<asp:GridView ID="MyGridView" runat="server"
AutoGenerateColumns="False"
OnRowCancelingEdit="gridView_RowCancelingEdit"
OnRowCommand="gridView_RowCommand"
OnRowDataBound="gridView_RowDataBound"
OnRowEditing="gridView_RowEditing"
OnRowUpdating="gridView_RowUpdating"
>....</GridView>
<asp:CustomValidator id="cvFabricCollection" runat="server"
ErrorMessage="Please enter at least one row"
ControlToValidate="gridView"
ValidationGroup="MyGroup"
ClientValidationFunction ="ValidateGrid">
</asp:CustomValidator>
<asp:ImageButton ID="Save_btn"
ImageUrl="images/save.gif"
runat="server"
CausesValidation="True"
ValidationGroup="MyGroup"
OnClick="Save_btn_Click"/>
Javascript:
function ValidateGrid(sender, args)
{
var rowscount = document.getElementByID(<%=MyGridView.ClientID%>).rows.length;
alert(rowscount);
if(rowscount <= 1)
{
args.IsValid = false;
return;
}
args.IsValid = true;
}
关于我做错了什么的任何想法?
谢谢!