标签：c asp-net label gridview itemtemplate
我想在标签中显示值(itemTemplate中的标签)
我试过这种方法
string s = null;
SelfCollectNameSpace.SelfCollect address = new SelfCollectNameSpace.SelfCollect();
s = address.getSelfCollectAddress(orderNoTracking);
if (string.IsNullOrEmpty(s) == false)
{
foreach (GridViewRow row in GridView1.Rows)
{
string LabelText = ((Label)row.FindControl("labelSelf")).Text;
LabelText = s;
Response.Write(LabelText+"test");
}
}
但gridview内的标签中没有显示任何内容. IT应该显示s的值.
接下来的方法是
string s = null;
SelfCollectNameSpace.SelfCollect address = new SelfCollectNameSpace.SelfCollect();
s = address.getSelfCollectAddress(orderNoTracking);
Label labelSelfCollect = GridView1.FindControl("labelSelf") as Label;
labelSelfCollect.Text = "Self Collect at "+ s;
我收到了这个错误
System.NullReferenceException: Object reference not set to an instance of an object.
我使用的最后一种方法是
string s = null;
SelfCollectNameSpace.SelfCollect address = new SelfCollectNameSpace.SelfCollect();
s = address.getSelfCollectAddress(orderNoTracking);
if (string.IsNullOrEmpty(s) == false)
{
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
Label labelcollect = row.FindControl("labelSelf") as Label;
labelcollect.Text = "self collect at "+ s;
}
}
}
使用此方法也没有显示任何内容.我应该如何将s值分配到此labelSelf(itemTemplate中的标签)？
我的aspx代码
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Width="772px" style="margin-left: 120px; text-align: left" Height="100px" DataKeyNames ="progressID" OnRowDataBound="GridView1_OnRowDataBound" OnRowDeleting="GridView1_RowDeleting" CellPadding="4" CssClass="rounded_corners" HeaderStyle-Height="40px">
<AlternatingRowStyle CssClass="rounded_corners tr tr" />
<Columns>
<asp:BoundField ControlStyle-BorderWidth="60" DataField="dateupdate" HeaderText="Date Update" DataFormatString="{0:dd/MM/yyyy}" >
<ControlStyle BorderWidth="60px" />
</asp:BoundField>
<asp:TemplateField HeaderText="Progress">
<ItemTemplate >
<%# Eval("message") %>
<br />
<asp:label ID="labelRemark" runat="server" style="Font-Size:11.5px;" text='<%# Eval("remark") %>'></asp:label><br />
<asp:Label ID="labelSelf" runat="server" style="Font-Size:11.5px;" ></asp:Label><br />
<div id="div<%# Eval("progressID") %>" >
<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False"
DataKeyNames="progressID" style="text-align:center; font-size:small;" CellPadding="4" OnRowCommand="GridView2_RowCommand" GridLines="None" CssClass="rounded_corners" Width="500px" >
<AlternatingRowStyle BackColor="White" />
<Columns>
<asp:BoundField DataField="tackingNo" HeaderText="Courier Tracking No" ItemStyle-Font-Size="Small" ItemStyle-Width="150px" >
</asp:BoundField>
<asp:BoundField DataField="courierDate" HeaderText="Courier Date">
</asp:BoundField>
<asp:TemplateField HeaderText="Provider">
<ItemTemplate>
<asp:HyperLink Text='<%#Eval("providernm")%>' Target="_blank" runat="server" DataNavigateUrlFields="companyurl" NavigateUrl='<%#Eval("companyurl")%>' ></asp:HyperLink>
<br />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Tracking" >
<ItemTemplate>
<br />
<asp:HyperLink Text="Track Here" Target="_blank" runat="server" DataNavigateUrlFields="trackingurl" NavigateUrl='<%#Eval("trackingurl")%>' ></asp:HyperLink>
<br />
<asp:Label ID="Label4" runat="server" Text="* check after 24 hours" Font-Italic="true"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="false">
<ItemTemplate>
<asp:LinkButton ID="LinkButtonDELETE" runat="server" CommandName="Delete" Text="Delete" OnClientClick= "return confirm('Confirm Delete progress?')"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
谢谢.
解决方法:
使用GridView1_OnRowDataBound而不是foreach(GridView1.Rows中的GridViewRow行).除此之外,你的第一种方法是正确的.你只是没有在那里分配Text属性,而是从中读取它.
SelfCollectNameSpace.SelfCollect address = new SelfCollectNameSpace.SelfCollect();
protected void MyGrid_RowDataBound(object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType == DataControlRowType.DataRow)
{
Label labelSelf = (Label)e.Row.FindControl("labelSelf");
labelSelf.Text = address.getSelfCollectAddress(orderNoTracking); // maybe you need to retrieve the orderNoTracking from another control in this row or from it's datasource
}
}
标签：c,asp-net,label,gridview,itemtemplate 来源： https://codeday.me/bug/20190702/1355120.html
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