GridView:隐藏页眉上的排序箭头
本文关键字：排序 隐藏 GridView | 更新日期: 2024-10-22 04:59:33
在无法排序的列标题上隐藏排序箭头时遇到困难。我在HeaderTemplate部分中清楚地定义了可排序列，在ItemTemplate中定义了不可排序列。但是，下面定义的第二个TemplateField仍然显示了排序箭头。我错过了什么？
<asp:GridView ID="gvBeneficiary" runat="server" Width="100%" AllowPaging="True" CssClass="gridheader"
EmptyDataText=""
AutoGenerateColumns="False" PageSize="10"
OnPageIndexChanging="gvBeneficiary_PageIndexChanging" OnRowCommand="gvBeneficiary_RowCommand"
OnRowDataBound="gvBeneficiary_RowDataBound" HeaderStyle-CssClass="lhs">
<Columns>
<asp:TemplateField HeaderStyle-CssClass="lhs">
<HeaderTemplate>
<asp:LinkButton ID="lnkFullName" Text="Full Name"
CommandName="Sort" CommandArgument="FullName" runat="server"></asp:LinkButton>
</HeaderTemplate>
<ItemTemplate>
<%#Eval("FullName") %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="lnkEdit" runat="server" CommandName="EditClick" CommandArgument='<%#Eval("RecipientID") %>'
Text="Edit">
</asp:LinkButton>
<asp:LinkButton ID="lnkDelete" runat="server" CommandName="DeleteClick" CommandArgument='<%#Eval("RecipientID") %>'
Text="Delete"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
在ItemTemplate中定义不可排序列是什么意思？为要启用排序的相应列的网格asd排序表达式指定Allowsorting=true。
<asp:GridView AllowSorting="true"......../> and
<asp:TemplateField.............. SortExpression ="Full Name">
并且不要为不需要排序的列指定排序表达式。
我认为这足以对指定的列进行排序。
是否有原因不能在网格视图中使用默认排序功能？如果可以的话，将"箭头"CSS应用于表头单元格中的所有超链接
.gvclass th a {background-image...}
这样，所有具有SortExpression的标头都将具有这些CSS属性，而所有不可排序的标头则不会（因为在这些单元格中不会生成超链接）。
如果您只想禁用事件中特定列的排序，通常应该将GridViewColumn的SortExpression设置为null:
gvBeneficiary.Columns[0].SortExpression = null;
我已经使用listview完成了这项工作。请试用Gridview
我的html代码是
<asp:ListView ID="lst_Area" runat="server" ItemPlaceholderID="tr" OnItemDataBound="lst_Area_ItemDataBound">
<LayoutTemplate>
<table cellspacing="0">
<tr class="hdrRowColor1">
<td width="35px" align="left">
S.No
</td>
<td align="left" width="400px">
<asp:LinkButton ID="lnk_Name" runat="server" CommandArgument="tblAreaNew.AreaName"
ValidationGroup="vgSearch" OnClick="lnk_Sort">Name</asp:LinkButton>
<asp:Image ID="img_lnk_Name" Visible="false" runat="server" />
</td>
<td align="left" width="250px">
<asp:LinkButton ID="lnk_Location" runat="server" CommandArgument="tblAreaNew.Locationid"
ValidationGroup="vgSearch" OnClick="lnk_Sort">Location</asp:LinkButton>
<asp:Image ID="img_lnk_Location" Visible="false" runat="server" />
</td>
<td align="left" width="175px">
<asp:LinkButton ID="lnk_CreatedBy" runat="server" CommandArgument="v.FirstName" ValidationGroup="vgSearch"
OnClick="lnk_Sort">Created By</asp:LinkButton>
<asp:Image ID="img_lnk_CreatedBy" Visible="false" runat="server" />
</td>
<td align="left" width="120px">
<asp:LinkButton ID="lnk_CreatedOn" runat="server" CommandArgument="tblAreaNew.createddate"
ValidationGroup="vgSearch" OnClick="lnk_Sort">Created On</asp:LinkButton>
<asp:Image ID="img_lnk_CreatedOn" Visible="false" runat="server" />
</td>
<td align="left" width="175px">
<%--<asp:LinkButton ID="lnkCreatedDate" runat="server" CommandArgument="tblUserActivities.CreatedDate"
OnClick="lnk_Sort">Created Date</asp:LinkButton>--%>
<asp:LinkButton ID="lnk_LastModfiedBy" runat="server" CommandArgument="v.FirstName"
ValidationGroup="vgSearch" OnClick="lnk_Sort">Last Modified By</asp:LinkButton>
<asp:Image ID="img_lnk_LastModfiedBy" Visible="false" runat="server" />
</td>
<td align="left" width="120px">
<asp:LinkButton ID="lnk_LastModfiedOn" runat="server" CommandArgument="tblAreaNew.ModifiedDate"
ValidationGroup="vgSearch" OnClick="lnk_Sort">Last Modified On</asp:LinkButton>
<asp:Image ID="img_lnk_LastModfiedOn" Visible="false" runat="server" />
</td>
<td align="center" width="50px">
<asp:LinkButton ID="lnk_Status" runat="server" CommandArgument="tblAreaNew.isactive"
ValidationGroup="vgSearch" OnClick="lnk_Sort">Status</asp:LinkButton>
<asp:Image ID="img_lnk_Status" Visible="false" runat="server" />
</td>
<td align="center" width="50px" style="border-right: 1px solid #6398cc;">
Activity
<%-- <div style="width: 50px; float: right;">
</div>--%>
</td>
</tr>
<tr id="tr" runat="server">
</tr>
</table>
</LayoutTemplate>
<ItemTemplate>
<tr>
<td align="left" valign="middle">
<%# Container.DataItemIndex+1 %>.
</td>
<td align="left">
<asp:Label ID="lblAreaID" runat="server" Text='<%# Eval("Areaid")%>' Visible="false"></asp:Label>
<%# Eval("AreaName")%>
</td>
<td align="left">
<%# Eval("Location")%>
</td>
<td align="left">
<%# Eval("CreatedBy")%>
</td>
<td align="left">
<%# Convert.ToDateTime(Eval("CreatedDate")).ToString("MMM, dd yyyy")%>
</td>
<td align="left">
<%# Eval("ModifiedBy")%>
</td>
<td align="left">
<%# Convert.ToDateTime(Eval("ModifiedDate")).ToString("MMM, dd yyyy")%>
</td>
<td align="center">
<asp:Label ID="lblLocationIsActive" runat="server" Style="display: none;" Text='<%# Eval("LocationIsActive")%>'></asp:Label>
<asp:Label ID="lbl_Status" runat="server" Style="display: none;" Text='<%# Eval("IsActive")%>'></asp:Label>
<asp:ImageButton ID="imgbtnStatus" runat="server" CommandArgument='<%# Eval("Areaid") %>'
OnClick="imgbtnStatus_Onclick" />
</td>
<td class="last" align="center">
<asp:Label ID="lblAreaName" runat="server" Style="display: none;" Text='<%# Eval("AreaName")%>'></asp:Label>
<asp:ImageButton ID="imgbtnEdit" runat="server" ImageUrl="~/App_Themes/ThemeNew/Images/edit.png"
ToolTip="Edit Details" CommandArgument='<%# Eval("AreaId") %>' OnClick="imgbtnEdit_OnClick" />
<asp:ImageButton ID="imgbtnDelete" runat="server" ImageUrl="~/App_Themes/ThemeNew/Images/delete.png"
ToolTip="Delete" CommandArgument='<%# Eval("AreaId") %>' Visible="false" OnClientClick="return confirm('Are you sure you want to delete the location?');"
OnClick="imgbtnDelete_OnClick" />
</td>
</tr>
</ItemTemplate>
</asp:ListView>
我的代码是
protected void lnk_Sort(object sender, EventArgs e)
{
LinkButton lnk = (LinkButton)sender;
string arg = lnk.CommandArgument.ToString();
ViewState["sortCol"] = arg;
GetSortDirection();
BindData(ViewState["sortCol"].ToString(), ViewState["sortDir"].ToString(), Convert.ToInt32(ViewState["nmbr"]), Pager.PageSize);
string name = lnk.ID;
Image img = (Image)(lst_Area.FindControl("img_" + name));
if (img != null)
{
SetSortOrderImage(img, ViewState["sortDir"].ToString());
}
}
private void SetSortOrderImage(Image image, String sortorder)
{
if (sortorder == "asc")
{
image.Visible = true;
image.ImageUrl = "../App_Themes/ThemeNew2/images/up.png";
}
else if (sortorder == "Desc")
{
image.Visible = true;
image.ImageUrl = "../App_Themes/ThemeNew2/images/down.png";
}
}
/// <summary>
/// this method get the sort direction
/// </summary>
private void GetSortDirection()
{
if (Convert.ToString(ViewState["sortDir"]) == "Desc")
{
ViewState["sortDir"] = "asc";
}
else
{
ViewState["sortDir"] = "Desc";
}
}
希望这对你有用。此外，我想让你知道，与自定义分页和排序相比，gridview的内置排序和分页更慢。