我有一个列表视图控件，在布局模板中，我有链接按钮。现在我想做什么。我每个链接按钮都有一个跨度。当我们点击链接按钮时，我想给 css 课。我的html代码如下：
<asp:ListView ID="lst_CallType" runat="server" ItemPlaceholderID="tr" OnItemDataBound="lst_CallType_ItemDataBound">
<LayoutTemplate>
<table cellspacing="0">
<tr class="hdrRowColor1">
<td align="left" width="500px">
<asp:LinkButton ID="lnk_Name" runat="server" ValidationGroup="vgSearch" OnClientClick="changeSortState();"
CommandArgument="tblCallTypenew.CallType" OnClick="lnk_Sort">Name</asp:LinkButton>
<span id="imgSortPosition" class="sortNotSelected"></span>
</td>
<td align="left" width="80px">
<asp:LinkButton ID="lnk_Status" runat="server" CommandArgument="tblCallTypenew.isactive"
ValidationGroup="vgSearch" OnClick="lnk_Sort">Status</asp:LinkButton>
<span id="Span1" class="sortNotSelected"></span>
</td>
<td align="left" width="200px">
<asp:LinkButton ID="lnk_CreatedOn" runat="server" CommandArgument="tblCallTypenew.CreatedDate"
ValidationGroup="vgSearch" OnClick="lnk_Sort">Created On</asp:LinkButton>
<span id="Span2" class="sortNotSelected"></span>
</td>
<td align="left" width="200px">
<asp:LinkButton ID="lnk_LastModfiedOn" runat="server" CommandArgument="tblCallTypenew.ModifiedDate"
ValidationGroup="vgSearch" OnClick="lnk_Sort">Last Modified On</asp:LinkButton>
<span id="Span3" class="sortNotSelected"></span>
</td>
<td align="left" width="200px">
<asp:LinkButton ID="lnk_CreatedBy" runat="server" CommandArgument="tblUserNew.FirstName"
ValidationGroup="vgSearch" OnClick="lnk_Sort">Created By</asp:LinkButton>
<span id="Span4" class="sortNotSelected"></span>
</td>
<td align="left" width="200px">
<%--<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">Modified By</asp:LinkButton>
<span id="Span5" class="sortNotSelected"></span>
</td>
<td align="left" 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 class='<%# Convert.ToBoolean(Container.DataItemIndex % 2) ? "EvenRowColor" : "OddRowColor" %>'>
<td align="left">
<asp:Label ID="lblDeptId" runat="server" Text='<%# Eval("ID")%>' Visible="false"></asp:Label>
<%# Eval("Calltype")%>
</td>
<td align="left">
<asp:Label ID="lbl_Status" runat="server" Style="display: none;" Text='<%# Eval("IsActive")%>'></asp:Label>
<asp:ImageButton ID="imgbtnStatus" runat="server" CommandArgument='<%# Eval("id") %>'
OnClick="imgbtnStatus_Onclick" />
</td>
<td align="left">
<%# Eval("CreatedDate")%>
</td>
<td align="left">
<%# Eval("ModifiedDate") %>
</td>
<td align="left">
<%# Eval("CreatedBy")%>
</td>
<td align="left">
<%# Eval("ModifiedBy")%>
</td>
<td>
<asp:Label ID="lblCallType" runat="server" Style="display: none;" Text='<%# Eval("Calltype")%>'></asp:Label>
<asp:ImageButton ID="imgbtnEdit" runat="server" ImageUrl="~/App_Themes/ThemeNew/Images/edit.png"
ToolTip="Edit Details" CommandArgument='<%# Eval("ID") %>' OnClick="imgbtnEdit_OnClick" />
<asp:ImageButton ID="imgbtnDelete" runat="server" ImageUrl="~/App_Themes/ThemeNew/Images/delete.png"
ToolTip="Delete" Style="display: none;" CommandArgument='<%# Eval("id") %>' OnClientClick="return confirm('Are you sure you want to delete the Call type?');"
OnClick="imgbtnDelete_OnClick" />
</td>
</tr>
</ItemTemplate>
</asp:ListView>
实际上，我想在用户单击链接按钮时显示排序图像。我想通过后面的代码来完成。我的 .cs 代码如下：
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);
}
private void GetSortDirection()
{
if (Convert.ToString(ViewState["sortDir"]) == "Desc")
{
ViewState["sortDir"] = "asc";
}
else
{
ViewState["sortDir"] = "Desc";
}
}