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这是尝试渲染网格项（单元格）失败的脚本。想法是处理输入值并将其返回到单元格 - 渲染。

ASP

 <asp:GridView ID="GridView_stations" runat="server" AutoGenerateColumns="False" 
    DataSourceID="mailreport" AllowSorting="True" Width="100%" AllowPaging="True">
    <Columns>
        <asp:BoundField DataField="id" HeaderText="ID" SortExpression="id" >
        <HeaderStyle HorizontalAlign="Center" Width="70px" />
        <ItemStyle HorizontalAlign="Center" />
        </asp:BoundField>
        <asp:BoundField DataField="name" ItemStyle-CssClass="padding-left" HeaderText="Name" SortExpression="name" >
                <HeaderStyle  CssClass="padding-left" HorizontalAlign="Left" />
                <ItemStyle CssClass="padding-left"></ItemStyle>
        </asp:BoundField>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:Button runat="server" Text='<%#renderthis(Eval("id"))%>' CommandArgument='<%#Eval("id")%>' OnClick="DoRedirect"  />
             </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="description" ItemStyle-CssClass="padding-left" HeaderText="Description" 
            SortExpression="description" >
        <HeaderStyle CssClass="padding-left" HorizontalAlign="Left" />

<ItemStyle CssClass="padding-left"></ItemStyle>
        </asp:BoundField>
        <asp:BoundField DataField="name" HeaderText="Last report" 
            SortExpression="name" >
        <HeaderStyle HorizontalAlign="Center" Width="120px" />
        <ItemStyle HorizontalAlign="Center" />
        </asp:BoundField>
        <asp:BoundField DataField="name" HeaderText="Status" SortExpression="name" >
        <HeaderStyle HorizontalAlign="Center" Width="100px" />
        <ItemStyle HorizontalAlign="Center" />
        </asp:BoundField>
    </Columns>
</asp:GridView>

C＃

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace MailReport
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }
        protected string renderthis(string sender)
        { 
            string str = sender.ToString()+"-str";
            return str;
        }
        protected void DoRedirect(object sender, EventArgs e)
        {
            Button theButton = sender as Button;
            Response.Redirect("Newpage.aspx?ID=" + theButton.CommandArgument);
        }
    }
}

错误：

    Compilation Error

    Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. 

    Compiler Error Message: CS1502: The best overloaded method match for 'MailReport.WebForm1.renderthis(string)' has some invalid arguments

    Source Error:
    Line 25: <asp:Button runat="server" **

Text='<%#renderthis(Eval("id"))%>'** CommandArgument='<%#Eval("id")%>' OnClick="DoRedirect"  />

请你能帮我理解这个错误以及如何继续。

4

1 回答 1

1

改变这个功能

从

protected string renderthis(string sender)
{ 
    string str = sender.ToString()+"-str";
    return str;
}

到

protected string renderthis(object sender)
{ 
    if(sender!=null)
    {
        string str = sender.ToString()+"-str";
        return str;
    }
    return "";
}
于 2013-02-14T05:15:10.950 回答