HTML Gridview的EditItemTemplate中的输入控件
HTML Input control in EditItemTemplate of a Gridview
我在 Gridview 的 EditItemTemplate 中有一个 HTML 输入日期控件。
我面临的问题是，在编辑模式下，当控件是数据绑定时，日期选择器没有出现
<asp:TemplateField HeaderText="Date Of Publication" SortExpression="DateOfPublication">
<EditItemTemplate>
<input id="tbDateOfPublicationEdit" runat="server" type="text" placeholder="Date Of Publication" title="Date Of Publication"
value='<%# Item.DateOfPublication == null ? "" : Item.DateOfPublication.Value.ToShortDateString() %>' />
</EditItemTemplate>
整个Gridview都在这里
<asp:GridView ID="gvAttachments" runat="server" AutoGenerateColumns="False" CellPadding="5" class="table" ItemType="Form_Attachment"
DataKeyNames="Form_AttachmentID" ForeColor="Black" GridLines="Vertical" BorderColor="#007D40"
OnRowDeleting="gvAttachments_RowDeleting"
OnRowEditing="gvAttachments_RowEditing" OnRowCancelingEdit="gvAttachments_RowCancelingEdit"
OnRowUpdating="gvAttachments_RowUpdating" OnRowDataBound="gvAttachments_RowDataBound"
AllowPaging="True" OnPageIndexChanging="gvAttachments_PageIndexChanging" PageSize="50" ShowFooter="True">
<FooterStyle BackColor="#007D40"
Font-Size="Larger" Font-Strikeout="False" />
<RowStyle BackColor="#F7F6F3" ForeColor="Black" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="Black" />
<PagerSettings Mode="NumericFirstLast" NextPageText="Page" />
<PagerStyle BackColor="#1A1718" ForeColor="White" HorizontalAlign="Center"
Font-Bold="True" Font-Italic="False" Font-Names="Copperplate Gothic Light"
Font-Size="X-Large" />
<HeaderStyle BackColor=" #007D40" Font-Bold="True" ForeColor="White" Width="100px" />
<AlternatingRowStyle BackColor="White" ForeColor="#333333" />
<EditRowStyle BackColor="#999999" />
<Columns>
<asp:TemplateField>
<ItemTemplate> <asp:Label ID="lblSerialNo" runat="server" Text='<%# Container.DataItemIndex +1 %>'></asp:Label> </ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="False" ControlStyle-Width="100px">
<EditItemTemplate>
<asp:LinkButton ID="lbtnUpdate" runat="server" CausesValidation="True" CommandName="Update" ToolTip="Update" CssClass="btn btn-default">
Update <span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
</asp:LinkButton>
<asp:LinkButton ID="lbtnCancel" runat="server" CausesValidation="False" CommandName="Cancel" ToolTip="Cancel" CssClass="btn btn-default">
Cancel <span class="glyphicon glyphicon-remove" aria-hidden="true"></span>
</asp:LinkButton>
</EditItemTemplate>
<ItemStyle Width="10px" />
<ItemTemplate>
<div id="divEditDelDownload" runat="server">
<asp:LinkButton ID="lbtnEdit" runat="server" CausesValidation="False" CommandName="Edit" ToolTip="Edit" CssClass="btn btn-default">
Edit <span class="glyphicon glyphicon-edit" aria-hidden="true"></span>
</asp:LinkButton>
<br />
<asp:LinkButton ID="lbtnDelete" runat="server" CausesValidation="false" CommandName="Delete" ToolTip="Delete" CssClass="btn btn-default"
Visible='<%# (int.Parse(Eval("RoleID").ToString()) == Master.RoleID)|| Master.RoleID ==(int) RoleID.VRGSSR%>'
OnClientClick="return ShowConfirm(this.id);">
Delete <span class="glyphicon glyphicon-trash" aria-hidden="true"></span>
</asp:LinkButton>
<br />
<asp:LinkButton ID="lbtnDownload" runat="server" CausesValidation="false"
Visible='<%# Item.DocumentName != "" %>' OnPreRender="lbtnDownload_PreRender"
CommandName="Select" ToolTip='<%# Item.DocumentName %>' CssClass="btn btn-default">
Open <span class="glyphicon glyphicon-download-alt" aria-hidden="true"></span>
</asp:LinkButton>
</div>
</ItemTemplate>
<FooterTemplate>
<asp:UpdatePanel ID="UpdatePanelFileUpload2" runat="server">
<Triggers>
<asp:PostBackTrigger ControlID="lbtnAdd" />
</Triggers>
<ContentTemplate>
<div style="width: 100px">
<asp:LinkButton ID="lbtnAdd" runat="server" CausesValidation="False" CommandName="Add" ToolTip="Add" CssClass="btn btn-default" OnClick="lbtnAdd_Click">
Add <span class="glyphicon glyphicon-plus" aria-hidden="true"></span>
</asp:LinkButton>
<br />
<input id="ApplicationAttachmentAddSingle" runat="server" type="file" title="Browse" accept=".pdf" />
</div>
</ContentTemplate>
</asp:UpdatePanel>
</FooterTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Form_AttachmentID" HeaderText="AttachmentID" Visible="False" />
<asp:BoundField DataField="ApplicationID" HeaderText="ApplicationID" Visible="False" />
<asp:TemplateField HeaderText="Type of Work">
<ItemTemplate>
<asp:Label ID="lblAttachmentCategory" runat="server" Text='<%#((AttachmentCategoryID)(int.Parse(Item.AttachmentCategoryID.ToString()))).ToString().Replace("_"," ") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList ID="ddlAttCat" runat="server" SelectedValue='<%# Item.AttachmentCategoryID %>' DataTextField="Text" DataValueField="Value"
DataSource='<%# Enum.GetNames(typeof(AttachmentCategoryID)).Select(s => new { Text = s.Replace("_", " "),Value = (int)(Enum.Parse(typeof(AttachmentCategoryID),s)) })%>'>
</asp:DropDownList>
</EditItemTemplate>
<FooterTemplate>
<asp:DropDownList ID="ddlAttCatAdd" runat="server" DataTextField="Text" DataValueField="Value"
DataSource='<%# Enum.GetNames(typeof(AttachmentCategoryID)).Select(s => new { Text = s.Replace("_", " "),Value = (int)(Enum.Parse(typeof(AttachmentCategoryID),s)) })%>'>
</asp:DropDownList>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Title" SortExpression="Description">
<EditItemTemplate>
<asp:TextBox ID="tbDescriptionEdit" TextMode="MultiLine" runat="server" Text='<%# Item.Description %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblDescription" runat="server" Text='<%# Item.Description %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<textarea id="tbDescriptionAdd" runat="server" textmode="MultiLine" placeholder="Title" title="Title"></textarea>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Date Of Publication" SortExpression="DateOfPublication">
<EditItemTemplate>
<input id="tbDateOfPublicationEdit" runat="server" type="text" placeholder="Date Of Publication" title="Date Of Publication"
value='<%# Item.DateOfPublication == null ? "" : Item.DateOfPublication.Value.ToShortDateString() %>' />
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblDateOfPublication" runat="server" Text='<%# Item.DateOfPublication == null ? "" : Item.DateOfPublication.Value.ToShortDateString() %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<input id="tbDateOfPublicationAdd" runat="server" type="date" placeholder="Date Of Publication" title="Date Of Publication" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Journal" SortExpression="Journal">
<EditItemTemplate>
<asp:TextBox ID="tbJournalEdit" TextMode="MultiLine" runat="server" Text='<%# Item.Journal %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblJournal" runat="server" Text='<%# Item.Journal %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<textarea id="tbJournalAdd" runat="server" textmode="MultiLine" placeholder="Journal " title="Journal "></textarea>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Uploaded By" Visible="false">
<ItemTemplate>
<asp:Label ID="lblEmployeeName" runat="server" Text='<%# GetEmployeeName()%>'> </asp:Label>
<br />
<asp:Label ID="lblRole" runat="server" CssClass="label label-default" Text='<%#((RoleID)(int.Parse(Item.RoleID.ToString()))).ToString().Replace("_"," ") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Selection For Ext. Reviewers">
<ItemStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:CheckBox ID="cbSel4ExtRev" runat="server"
Checked='<%# Item.SelectionForExtRev%>'
AutoPostBack="True"
OnCheckedChanged="cbSel4ExtRev_CheckedChanged"
ToolTip="Check to enable this document to be viewed by External Reviewers" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="No Of Authors">
<ItemTemplate>
<asp:TextBox runat="server" MaxLength="50" AutoPostBack="true" Text='<%# Item.NoOfAuthors%>' TextMode="Number" ID="tbNoOfAuthors" OnTextChanged="tbNoOfAuthors_TextChanged" Width="50px"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Is First Author?">
<ItemStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:CheckBox ID="cbFirstAuthor" runat="server"
Checked='<%# Item.FirstAuthor%>'
AutoPostBack="True"
OnCheckedChanged="cbFirstAuthor_CheckedChanged"
ToolTip="Check if the applicant is the First Author" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Points">
<ItemTemplate>
<asp:Label ID="lblPoints" runat="server" Text='<%# Item.Points %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
Total:
<asp:Label ID="lblPoints" runat="server" Text='<%# GetTotalPoints() %>'></asp:Label>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Acceptable?">
<ItemTemplate>
<asp:CheckBox ID="cbAccept" runat="server"
Checked='<%# Item.Accept%>'
AutoPostBack="True"
OnCheckedChanged="cbAcceptable_CheckedChanged"
ToolTip="Check if the publication is acceptable" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Remarks" SortExpression="Remarks">
<EditItemTemplate>
<asp:TextBox ID="tbRemarksEdit" TextMode="MultiLine" runat="server" Text='<%# Item.Remarks %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblRemarks" runat="server" Text='<%# Item.Remarks %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<textarea id="tbRemarksAdd" runat="server" textmode="MultiLine" placeholder="Remarks" title="Remarks"></textarea>
</FooterTemplate>
</asp:TemplateField>
</Columns>
<EmptyDataTemplate>
[<em>No files were uploaded for this application</em>]
</EmptyDataTemplate>
</asp:GridView>
尝试改变
<input id="tbDateOfPublicationEdit" runat="server" type="text" placeholder="Date Of Publication" title="Date Of Publication"
到
<input id="tbDateOfPublicationEdit" runat="server" type="date" placeholder="Date Of Publication" title="Date Of Publication"
我认为日期选择器使用 JavaScript 所以如果你使用 runat="server"，日期选择器将不会显示。
我在 Gridview 的 EditItemTemplate 中有一个 HTML 输入日期控件。 我面临的问题是，在编辑模式下，当控件是数据绑定时，日期选择器没有出现
<asp:TemplateField HeaderText="Date Of Publication" SortExpression="DateOfPublication">
<EditItemTemplate>
<input id="tbDateOfPublicationEdit" runat="server" type="text" placeholder="Date Of Publication" title="Date Of Publication"
value='<%# Item.DateOfPublication == null ? "" : Item.DateOfPublication.Value.ToShortDateString() %>' />
</EditItemTemplate>
整个Gridview都在这里
<asp:GridView ID="gvAttachments" runat="server" AutoGenerateColumns="False" CellPadding="5" class="table" ItemType="Form_Attachment"
DataKeyNames="Form_AttachmentID" ForeColor="Black" GridLines="Vertical" BorderColor="#007D40"
OnRowDeleting="gvAttachments_RowDeleting"
OnRowEditing="gvAttachments_RowEditing" OnRowCancelingEdit="gvAttachments_RowCancelingEdit"
OnRowUpdating="gvAttachments_RowUpdating" OnRowDataBound="gvAttachments_RowDataBound"
AllowPaging="True" OnPageIndexChanging="gvAttachments_PageIndexChanging" PageSize="50" ShowFooter="True">
<FooterStyle BackColor="#007D40"
Font-Size="Larger" Font-Strikeout="False" />
<RowStyle BackColor="#F7F6F3" ForeColor="Black" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="Black" />
<PagerSettings Mode="NumericFirstLast" NextPageText="Page" />
<PagerStyle BackColor="#1A1718" ForeColor="White" HorizontalAlign="Center"
Font-Bold="True" Font-Italic="False" Font-Names="Copperplate Gothic Light"
Font-Size="X-Large" />
<HeaderStyle BackColor=" #007D40" Font-Bold="True" ForeColor="White" Width="100px" />
<AlternatingRowStyle BackColor="White" ForeColor="#333333" />
<EditRowStyle BackColor="#999999" />
<Columns>
<asp:TemplateField>
<ItemTemplate> <asp:Label ID="lblSerialNo" runat="server" Text='<%# Container.DataItemIndex +1 %>'></asp:Label> </ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="False" ControlStyle-Width="100px">
<EditItemTemplate>
<asp:LinkButton ID="lbtnUpdate" runat="server" CausesValidation="True" CommandName="Update" ToolTip="Update" CssClass="btn btn-default">
Update <span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
</asp:LinkButton>
<asp:LinkButton ID="lbtnCancel" runat="server" CausesValidation="False" CommandName="Cancel" ToolTip="Cancel" CssClass="btn btn-default">
Cancel <span class="glyphicon glyphicon-remove" aria-hidden="true"></span>
</asp:LinkButton>
</EditItemTemplate>
<ItemStyle Width="10px" />
<ItemTemplate>
<div id="divEditDelDownload" runat="server">
<asp:LinkButton ID="lbtnEdit" runat="server" CausesValidation="False" CommandName="Edit" ToolTip="Edit" CssClass="btn btn-default">
Edit <span class="glyphicon glyphicon-edit" aria-hidden="true"></span>
</asp:LinkButton>
<br />
<asp:LinkButton ID="lbtnDelete" runat="server" CausesValidation="false" CommandName="Delete" ToolTip="Delete" CssClass="btn btn-default"
Visible='<%# (int.Parse(Eval("RoleID").ToString()) == Master.RoleID)|| Master.RoleID ==(int) RoleID.VRGSSR%>'
OnClientClick="return ShowConfirm(this.id);">
Delete <span class="glyphicon glyphicon-trash" aria-hidden="true"></span>
</asp:LinkButton>
<br />
<asp:LinkButton ID="lbtnDownload" runat="server" CausesValidation="false"
Visible='<%# Item.DocumentName != "" %>' OnPreRender="lbtnDownload_PreRender"
CommandName="Select" ToolTip='<%# Item.DocumentName %>' CssClass="btn btn-default">
Open <span class="glyphicon glyphicon-download-alt" aria-hidden="true"></span>
</asp:LinkButton>
</div>
</ItemTemplate>
<FooterTemplate>
<asp:UpdatePanel ID="UpdatePanelFileUpload2" runat="server">
<Triggers>
<asp:PostBackTrigger ControlID="lbtnAdd" />
</Triggers>
<ContentTemplate>
<div style="width: 100px">
<asp:LinkButton ID="lbtnAdd" runat="server" CausesValidation="False" CommandName="Add" ToolTip="Add" CssClass="btn btn-default" OnClick="lbtnAdd_Click">
Add <span class="glyphicon glyphicon-plus" aria-hidden="true"></span>
</asp:LinkButton>
<br />
<input id="ApplicationAttachmentAddSingle" runat="server" type="file" title="Browse" accept=".pdf" />
</div>
</ContentTemplate>
</asp:UpdatePanel>
</FooterTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Form_AttachmentID" HeaderText="AttachmentID" Visible="False" />
<asp:BoundField DataField="ApplicationID" HeaderText="ApplicationID" Visible="False" />
<asp:TemplateField HeaderText="Type of Work">
<ItemTemplate>
<asp:Label ID="lblAttachmentCategory" runat="server" Text='<%#((AttachmentCategoryID)(int.Parse(Item.AttachmentCategoryID.ToString()))).ToString().Replace("_"," ") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList ID="ddlAttCat" runat="server" SelectedValue='<%# Item.AttachmentCategoryID %>' DataTextField="Text" DataValueField="Value"
DataSource='<%# Enum.GetNames(typeof(AttachmentCategoryID)).Select(s => new { Text = s.Replace("_", " "),Value = (int)(Enum.Parse(typeof(AttachmentCategoryID),s)) })%>'>
</asp:DropDownList>
</EditItemTemplate>
<FooterTemplate>
<asp:DropDownList ID="ddlAttCatAdd" runat="server" DataTextField="Text" DataValueField="Value"
DataSource='<%# Enum.GetNames(typeof(AttachmentCategoryID)).Select(s => new { Text = s.Replace("_", " "),Value = (int)(Enum.Parse(typeof(AttachmentCategoryID),s)) })%>'>
</asp:DropDownList>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Title" SortExpression="Description">
<EditItemTemplate>
<asp:TextBox ID="tbDescriptionEdit" TextMode="MultiLine" runat="server" Text='<%# Item.Description %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblDescription" runat="server" Text='<%# Item.Description %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<textarea id="tbDescriptionAdd" runat="server" textmode="MultiLine" placeholder="Title" title="Title"></textarea>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Date Of Publication" SortExpression="DateOfPublication">
<EditItemTemplate>
<input id="tbDateOfPublicationEdit" runat="server" type="text" placeholder="Date Of Publication" title="Date Of Publication"
value='<%# Item.DateOfPublication == null ? "" : Item.DateOfPublication.Value.ToShortDateString() %>' />
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblDateOfPublication" runat="server" Text='<%# Item.DateOfPublication == null ? "" : Item.DateOfPublication.Value.ToShortDateString() %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<input id="tbDateOfPublicationAdd" runat="server" type="date" placeholder="Date Of Publication" title="Date Of Publication" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Journal" SortExpression="Journal">
<EditItemTemplate>
<asp:TextBox ID="tbJournalEdit" TextMode="MultiLine" runat="server" Text='<%# Item.Journal %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblJournal" runat="server" Text='<%# Item.Journal %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<textarea id="tbJournalAdd" runat="server" textmode="MultiLine" placeholder="Journal " title="Journal "></textarea>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Uploaded By" Visible="false">
<ItemTemplate>
<asp:Label ID="lblEmployeeName" runat="server" Text='<%# GetEmployeeName()%>'> </asp:Label>
<br />
<asp:Label ID="lblRole" runat="server" CssClass="label label-default" Text='<%#((RoleID)(int.Parse(Item.RoleID.ToString()))).ToString().Replace("_"," ") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Selection For Ext. Reviewers">
<ItemStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:CheckBox ID="cbSel4ExtRev" runat="server"
Checked='<%# Item.SelectionForExtRev%>'
AutoPostBack="True"
OnCheckedChanged="cbSel4ExtRev_CheckedChanged"
ToolTip="Check to enable this document to be viewed by External Reviewers" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="No Of Authors">
<ItemTemplate>
<asp:TextBox runat="server" MaxLength="50" AutoPostBack="true" Text='<%# Item.NoOfAuthors%>' TextMode="Number" ID="tbNoOfAuthors" OnTextChanged="tbNoOfAuthors_TextChanged" Width="50px"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Is First Author?">
<ItemStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:CheckBox ID="cbFirstAuthor" runat="server"
Checked='<%# Item.FirstAuthor%>'
AutoPostBack="True"
OnCheckedChanged="cbFirstAuthor_CheckedChanged"
ToolTip="Check if the applicant is the First Author" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Points">
<ItemTemplate>
<asp:Label ID="lblPoints" runat="server" Text='<%# Item.Points %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
Total:
<asp:Label ID="lblPoints" runat="server" Text='<%# GetTotalPoints() %>'></asp:Label>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Acceptable?">
<ItemTemplate>
<asp:CheckBox ID="cbAccept" runat="server"
Checked='<%# Item.Accept%>'
AutoPostBack="True"
OnCheckedChanged="cbAcceptable_CheckedChanged"
ToolTip="Check if the publication is acceptable" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Remarks" SortExpression="Remarks">
<EditItemTemplate>
<asp:TextBox ID="tbRemarksEdit" TextMode="MultiLine" runat="server" Text='<%# Item.Remarks %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblRemarks" runat="server" Text='<%# Item.Remarks %>'></asp:Label>
</ItemTemplate>
<FooterTemplate>
<textarea id="tbRemarksAdd" runat="server" textmode="MultiLine" placeholder="Remarks" title="Remarks"></textarea>
</FooterTemplate>
</asp:TemplateField>
</Columns>
<EmptyDataTemplate>
[<em>No files were uploaded for this application</em>]
</EmptyDataTemplate>
</asp:GridView>
尝试改变
<input id="tbDateOfPublicationEdit" runat="server" type="text" placeholder="Date Of Publication" title="Date Of Publication"
到
<input id="tbDateOfPublicationEdit" runat="server" type="date" placeholder="Date Of Publication" title="Date Of Publication"
我认为日期选择器使用 JavaScript 所以如果你使用 runat="server"，日期选择器将不会显示。