我试过这个，但它不起作用：
function validationsBirdstra() {
var grid = document.getElementById('<%=GVBirdstransfer.ClientID%>');
var theTextBoxvalue = grid.rows[0].cells[1].children[0].value;
if (theTextBoxvalue == "") {
alert('enter Type please');
return false;
}
}
我的gridview是
<table style="clear: both; float: none; margin-right: auto; margin-left: auto; font: 13px Verdana;">
<tbody>
<tr>
<td>
<asp:GridView ID="GVBirdstransfer" runat="server" BorderColor="#BDBDBD" ShowFooter="True"
CssClass="center" OnRowDataBound="GVBirdstransfer_RowDataBound" GridLines="Horizontal"
OnRowDeleting="GVBirdstransfer_RowDeleting" AutoGenerateColumns="False">
<EmptyDataTemplate>
No Records found</EmptyDataTemplate>
<Columns>
<asp:TemplateField ItemStyle-Width="20px" HeaderText="SNo">
<ItemTemplate>
<%#Container.DataItemIndex+1 %>
</ItemTemplate>
<ItemStyle Width="20px" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Type">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:DropDownList ID="ddltype" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddltype_SelectedIndexChanged">
</asp:DropDownList>
<asp:RequiredFieldValidator ID="RFVbirdtype" runat="server" ControlToValidate="ddltype"
ValidationGroup="GridView1" InitialValue="Select Me" Display="Dynamic" ErrorMessage="Please select Type"></asp:RequiredFieldValidator>
<asp:ValidatorCalloutExtender ID="VCEbirdtype" runat="Server" TargetControlID="RFVbirdtype"
EnableViewState="false" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="To Branch">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:DropDownList ID="ddltobranch" runat="server" AutoPostBack="true">
<asp:ListItem Value="0" Text="--Select--"></asp:ListItem>
</asp:DropDownList>
<%--<asp:RequiredFieldValidator ID="RFVfrmbranch" runat="server" ControlToValidate="ddltobranch"
ValidationGroup="GridView1" InitialValue="0" Display="None" ErrorMessage="Please select Branch "></asp:RequiredFieldValidator>
<asp:ValidatorCalloutExtender ID="VCEfrmbranch" runat="Server" TargetControlID="RFVfrmbranch"
EnableViewState="false" />--%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Birds">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:TextBox ID="txtbirds" Width="70px" MaxLength="15" runat="server" onkeypress="return validatenumerics(event)"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfv" runat="server" ControlToValidate="txtbirds"
ValidationGroup="GridView1" Display="Static" Text="*"></asp:RequiredFieldValidator>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Mortality">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:TextBox ID="txtmortality" Width="70px" MaxLength="15" runat="server" onkeypress="return validatenumerics(event)"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfv1" runat="server" ControlToValidate="txtmortality"
ValidationGroup="GridView1" Display="Static" Text="*"></asp:RequiredFieldValidator>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Weight">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:TextBox ID="txtweight" Width="70px" MaxLength="15" runat="server" onkeypress="return validatenumerics(event)"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfv2" runat="server" ControlToValidate="txtweight"
ValidationGroup="GridView1" Display="Static" Text="*"></asp:RequiredFieldValidator>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="GRNo">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:TextBox ID="txtgrno" Width="70px" MaxLength="15" runat="server" AutoPostBack="true"
onkeypress="return validatenumerics(event)"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfv3" runat="server" ControlToValidate="txtgrno"
ValidationGroup="GridView1" Display="Static" Text="*"></asp:RequiredFieldValidator>
</ItemTemplate>
<FooterStyle HorizontalAlign="Right" />
<FooterTemplate>
<asp:Button ID="BtnAdd" runat="server" Text="Add" OnClick="BtnAdd_Click" ValidationGroup="GridView1"
CausesValidation="true" />
</FooterTemplate>
<ItemStyle Width="100px" />
</asp:TemplateField>
<asp:CommandField ShowDeleteButton="True" />
</Columns>
</asp:GridView>
</td>
</tr>
<%-- <tr>
<td align="center" style="padding-right: 10px">
<b>Total Weight:</b>
<asp:TextBox ID="txtTotal1" runat="server" Width="80px" />
</td>
</tr>--%>
<tr>
<td align="center">
<asp:Button ID="btnsave" runat="server" Text="Save" OnClick="btnSave_Click" OnClientClick="return validationsBirdstra();"
ValidationGroup="GridView1" CausesValidation="true" Style="height: 26px" />
</td>
</tr>
</tbody>
</table>
我创建了gridview。我有一些下拉列表和一些文本框。现在我想对那些进行验证。
答案 0 :(得分：0)
如果您使用的是RequiredFieldValidator，那么为什么要使用Javascript。只需在按钮中删除OnClientClick并尝试，它将触发。
在RequiredFieldValidator中将显示设置为动态
试试这个
<table style="clear: both; float: none; margin-right: auto; margin-left: auto; font: 13px Verdana;">
<tbody>
<tr>
<td>
<asp:GridView ID="GVBirdstransfer" runat="server" BorderColor="#BDBDBD" ShowFooter="True"
CssClass="center" OnRowDataBound="GVBirdstransfer_RowDataBound" GridLines="Horizontal"
OnRowDeleting="GVBirdstransfer_RowDeleting" AutoGenerateColumns="False">
<EmptyDataTemplate>
No Records found</EmptyDataTemplate>
<Columns>
<asp:TemplateField ItemStyle-Width="20px" HeaderText="SNo">
<ItemTemplate>
<%#Container.DataItemIndex+1 %>
</ItemTemplate>
<ItemStyle Width="20px" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Type">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:DropDownList ID="ddltype" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddltype_SelectedIndexChanged">
</asp:DropDownList>
<asp:RequiredFieldValidator ID="RFVbirdtype" runat="server" ControlToValidate="ddltype"
ValidationGroup="GridView1" InitialValue="Select Me" Display="Dynamic" ErrorMessage="Please select Type"></asp:RequiredFieldValidator>
<asp:ValidatorCalloutExtender ID="VCEbirdtype" runat="Server" TargetControlID="RFVbirdtype"
EnableViewState="false" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="To Branch">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:DropDownList ID="ddltobranch" runat="server" AutoPostBack="true">
<asp:ListItem Value="0" Text="--Select--"></asp:ListItem>
</asp:DropDownList>
<%--<asp:RequiredFieldValidator ID="RFVfrmbranch" runat="server" ControlToValidate="ddltobranch"
ValidationGroup="GridView1" InitialValue="0" Display="None" ErrorMessage="Please select Branch "></asp:RequiredFieldValidator>
<asp:ValidatorCalloutExtender ID="VCEfrmbranch" runat="Server" TargetControlID="RFVfrmbranch"
EnableViewState="false" />--%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Birds">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:TextBox ID="txtbirds" Width="70px" MaxLength="15" runat="server" onkeypress="return validatenumerics(event)"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfv" runat="server" ControlToValidate="txtbirds"
ValidationGroup="GridView1" Display="Dynamic" Text="*"></asp:RequiredFieldValidator>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Mortality">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:TextBox ID="txtmortality" Width="70px" MaxLength="15" runat="server" onkeypress="return validatenumerics(event)"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfv1" runat="server" ControlToValidate="txtmortality"
ValidationGroup="GridView1" Display="Dynamic" Text="*"></asp:RequiredFieldValidator>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Weight">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:TextBox ID="txtweight" Width="70px" MaxLength="15" runat="server" onkeypress="return validatenumerics(event)"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfv2" runat="server" ControlToValidate="txtweight"
ValidationGroup="GridView1" Display="Dynamic" Text="*"></asp:RequiredFieldValidator>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="GRNo">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:TextBox ID="txtgrno" Width="70px" MaxLength="15" runat="server" AutoPostBack="true"
onkeypress="return validatenumerics(event)"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfv3" runat="server" ControlToValidate="txtgrno"
ValidationGroup="GridView1" Display="Dynamic" Text="*"></asp:RequiredFieldValidator>
</ItemTemplate>
<FooterStyle HorizontalAlign="Right" />
<FooterTemplate>
<asp:Button ID="BtnAdd" runat="server" Text="Add" OnClick="BtnAdd_Click" ValidationGroup="GridView1"
CausesValidation="true" />
</FooterTemplate>
<ItemStyle Width="100px" />
</asp:TemplateField>
<asp:CommandField ShowDeleteButton="True" />
</Columns>
</asp:GridView>
</td>
</tr>
<%-- <tr>
<td align="center" style="padding-right: 10px">
<b>Total Weight:</b>
<asp:TextBox ID="txtTotal1" runat="server" Width="80px" />
</td>
</tr>--%>
<tr>
<td align="center">
<asp:Button ID="btnsave" runat="server" Text="Save" OnClick="btnSave_Click" ValidationGroup="GridView1" CausesValidation="true" Style="height: 26px" />
</td>
</tr>
</tbody>
</table>
答案 1 :(得分：0)
浏览网页后，打开页面源并查找网格视图。
您将获得客户端ID。现在用您的客户端ID替换<%=GVBirdstransfer.ClientID%>并检查