为什么图像按钮显示文本提交查询运行时

时间:2013-10-31 11:16:18

标签: asp.net

我在datalist中使用imagebutton并设置codeexpression:Eval(“PictureUrl”,“ProductImages \ thumb_ {0}”)和运行时显示submitquery。

 <asp:DataList ID="DataList1" runat="server" DataKeyField="pid" 
            DataSourceID="SqlDataSource1">
            <ItemTemplate>
                pname:
                <asp:Label ID="pnameLabel" runat="server" Text='<%# Eval("pname") %>' />
                <br />
                pprice:
                <asp:Label ID="ppriceLabel" runat="server" Text='<%# Eval("pprice") %>' />
                <br />
                publisher:
                <asp:Label ID="publisherLabel" runat="server" Text='<%# Eval("publisher") %>' />
                <br />
                writer:
                <asp:Label ID="writerLabel" runat="server" Text='<%# Eval("writer") %>' />
                <br />
                <asp:ImageButton ID="ImageButton7" runat="server" 
                    ImageUrl='<%# Eval("PictureUrl", "ProductImages\thumb_{0}") %>' />
                <br />
            </ItemTemplate>
        </asp:DataList>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server" 
            ConnectionString="<%$ ConnectionStrings:dbpath %>" 
            SelectCommand="SELECT [pname], [pprice], [PictureUrl], [gid], [storeid], [publisher], [writer], [pid] FROM [tblproduct]">
        </asp:SqlDataSource>

输出一条记录:

pname:
                <span id="ContentPlaceHolder1_DataList1_pnameLabel_0">تکنیک عکاسی</span>
                <br />
                pprice:
                <span id="ContentPlaceHolder1_DataList1_ppriceLabel_0">125000    </span>
                <br />
                publisher:
                <span id="ContentPlaceHolder1_DataList1_publisherLabel_0">اسرار دانش</span>
                <br />
                writer:
                <span id="ContentPlaceHolder1_DataList1_writerLabel_0">نصرالله کسرائیان</span>
                <br />
                <input type="image" name="ctl00$ContentPlaceHolder1$DataList1$ctl00$ImageButton7" id="ContentPlaceHolder1_DataList1_ImageButton7_0" src="ProductImages%09humb_~/image/tecnikakasi.jpg" />

2 个答案:

答案 0 :(得分:2)

您获得了正确的HTML呈现

<asp:ImageButton ID="ImageButton7" runat="server" 

                ImageUrl='<%# Eval("PictureUrl", "ProductImages\thumb_{0}") %>' />

将生成input

type=image代码
<input type="image" name="ctl00$ContentPlaceHolder1$DataList1$ctl00$ImageButton7" id="ContentPlaceHolder1_DataList1_ImageButton7_0" src="ProductImages%09humb_~/image/tecnikakasi.jpg" />

问题是ProductImages%09humb_~/image/tecnikakasi.jpg 不存在。这可能是错的。

检查渲染的相对路径。

尝试

 ImageUrl='<%# Eval("PictureUrl", "~/ProductImages/thumb_{0}") %>' 

答案 1 :(得分:0)

显示“SubmitQuery”,因为您的图片未加载。如果你的作家替代文字,那么将显示替代文字。

您可以查看生成的html的来源并检查图像的路径并尝试更正它以解决此问题。

ImageUrl ='&lt;%#Eval(“PictureUrl”,“{0}”)%&gt;'