【发布时间】：2012-05-26 14:17:37
【问题描述】：
问题：
如果用户选中了您在屏幕一中看到的复选框，我正在尝试验证下拉列表。
问题：
那么，如果用户从标题中选择了所有复选框，我该如何验证复选框？ 如您所见，屏幕两个。如果我选择所有复选框，那么我希望启动验证，如屏幕一所示。
输出：
屏幕 1：
屏幕 2
//aspx
<asp:GridView ID="gv" runat="server" AutoGenerateColumns="False" DataKeyNames="Id"
OnRowDataBound="gv_RowDataBound">
<Columns>
<asp:BoundField DataField="ID" ControlStyle-Width="250px" HeaderText="ID" SortExpression="ID" />
<asp:BoundField DataField="FirstName" ControlStyle-Width="250px" HeaderText="FirstName"
SortExpression="FirstName" />
<asp:BoundField DataField="LastName" ControlStyle-Width="250px" HeaderText="LastName"
SortExpression="LastName" />
<asp:TemplateField HeaderText="Reject">
<HeaderTemplate >
Reject<br />
<asp:CheckBox ID="checkboxall" runat="server" />
<asp:DropDownList ID="drpPaymentMethod_header" runat="server">
<asp:ListItem Value="-1">Please select reason</asp:ListItem>
<asp:ListItem Value="0">Month</asp:ListItem>
<asp:ListItem Value="1">At End</asp:ListItem>
<asp:ListItem Value="2">At Travel</asp:ListItem>
</asp:DropDownList>
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="checkbox1" CssClass="selectreject" runat="server" />
<asp:DropDownList ID="drpPaymentMethod" runat="server">
<asp:ListItem Value="-1">Please select reason</asp:ListItem>
<asp:ListItem Value="0">Month</asp:ListItem>
<asp:ListItem Value="1">At End</asp:ListItem>
<asp:ListItem Value="2">At Travel</asp:ListItem>
</asp:DropDownList>
<asp:RequiredFieldValidator ID="rfv" InitialValue="-1" ControlToValidate="drpPaymentMethod" ForeColor="Red" SetFocusOnError="true"
Enabled="false" Display="dynamic" runat="server" ErrorMessage="Please select reason"></asp:RequiredFieldValidator>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Value">
<ItemTemplate>
<asp:TextBox ID="txt_Value" runat="server" Width="58px" Text="0"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
//cs
protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
CheckBox checkbox1 = e.Row.FindControl("checkbox1") as CheckBox;
RequiredFieldValidator rfv = e.Row.FindControl("rfv") as RequiredFieldValidator;
DropDownList drpPaymentMethod = (DropDownList)e.Row.FindControl("drpPaymentMethod");
// you can just pass "this" instead of "myDiv.ClientID" and get the ID from the DOM element
checkbox1.Attributes.Add("onclick", "UpdateValidator('" + checkbox1.ClientID + "','" + drpPaymentMethod.ClientID + "','" + rfv.ClientID + "');");
if (!checkbox1.Checked)
drpPaymentMethod.Attributes.Add("disabled", "disabled");
}
if (e.Row.RowType == DataControlRowType.Header)
{
CheckBox checkboxall = e.Row.FindControl("checkboxall") as CheckBox;
//how to get the reference here ( rfv ?????????)
//checkboxall.Attributes.Add("onclick", "UpdateValidatorAll('" + checkboxall.ClientID + "','" + drpPaymentMethod.ClientID + "','" + rfv.ClientID + "');");
}
}
//js
$(document).ready(function () {
var checkbox1 = "#<%=gv.ClientID%> input[id*='checkbox1']:checkbox";
var checkboxall = $("input[id$='checkboxall']");
$(checkboxall).click(function () {
if (checkboxall.is(':checked')) {
$('.selectreject > input').attr("checked", checkboxall.attr("checked"));
}
else {
$('.selectreject > input').attr("checked", false);
}
});
});
function UpdateValidator(chkID, drpID, validatorid) {
//enabling the validator only if the checkbox is checked
var enableValidator = $("#" + chkID).is(":checked");
if (enableValidator)
$('#' + drpID).removeAttr('disabled');
else
$('#' + drpID).attr('disabled', 'disabled');
var vv = $('#' + validatorid).val();
ValidatorEnable(document.getElementById(validatorid), enableValidator);
}
function UpdateValidatorAll(....) // i havent write the code for this function (select All checkbox)
【问题讨论】：
标签： javascript asp.net validation gridview