如何访问放在里面的ItemTemplate在GridView图像控件的ImageUrl属性 [英] How to access ImageUrl property of the Image Control placed inside a ItemTemplate in the GridView

问题描述

我的GridView的标记：

My GridView Markup:

<asp:GridView ID="GrdVw" visible="False" runat="server" AllowPaging="True" 
    AutoGenerateColumns="False">
    <Columns>
        <asp:BoundField DataField="Title" HeaderText="Title" />
        <asp:BoundField DataFi

eld="Comment" HeaderText="Comment" />

            <asp:TemplateField HeaderText="Review Document">
                <ItemTemplate>

                <asp:Image ID="currentDocFile" runat="server" />
            </ItemTemplate>
            <EditItemTemplate>
                <asp:FileUpload ID="reviewDoc_UpldFl" runat="server" />
            </EditItemTemplate>
        </asp:TemplateField>
        <asp:CommandField ShowEditButton="True" />
        <asp:CommandField ShowDeleteButton="True" />
    </Columns>
</asp:GridView>

我的绑定方法，我从Page_Load中取消和/更新后打电话等：

My Bind Method that I call from Page_Load and after Cancelling/Updating, etc:

    private void BindGrdVw()
    {
        List<ArticleComments> commentsList = ArticleCommentsBLL.GetComments(ArticleID);
        if (cruiseReviewsList.Count != 0)
        {
            GrdVw.DataSource = commentsList;
            GrdVw.DataKeyNames = new string[] { "ID" };
            GrdVw.DataBind();
            GrdVw.Visible = true;
        }
     } 

..现在，当你看到我有一个模板领域，我访问我编辑的行中EditTemplate由文件上传控制的FindControl（）。但我怎么能进入图像控件的属性的ImageUrl。

..Now as you see I have a template field, I access the 'FileUpload' control in the EditTemplate by 'FindControl()' of the row that I'm editing. but how can I access the 'Image' control's property 'ImageUrl'.

我需要将其设置为类似于以下，这是在文件后面code另一个项目的样本code，但我能够直接访问图像。

I need to set it to something like the following, this is a sample code from another project in the code behind file but I was able to access the image directly.

currentProfilePic_Img.ImageUrl = ConfigurationManager.AppSettings["cruisesPpUploadPath"].ToString() + currentCruise.ProfilePic;

*本的AppSettings返回，我使用的上传文件夹的路径。

*The AppSettings returns the path for the folder that I use for uploading.

* currentCruise是一个对象，它的属性是通过我的DAL层分配。

*currentCruise is an object and it's properties was assigned through my DAL layer.

推荐答案

我想我明白你想怎么办...

I think I understand what you're trying to do...

如果您希望将图像控制URL动态绑定，你必须勾到在GridView的RowDataBound事件。

If you want to bind the image control URL dynamically, you will have to hook into the RowDataBound event of the GridView.

<asp:GridView ID="GrdVw" visible="False" runat="server" AllowPaging="True" 
    AutoGenerateColumns="False" OnRowDataBound="GrdVwDataBound">

protected virtual void GrdVwDataBound(GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        var imageControl = e.Row.FindControl("currentDocFile") as Image;
        imageControl.ImageUrl = // Image URL here
    }
}

希望这有助于！

在此处了解详情：

<一个href=\"http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.onrowdatabound.aspx\" rel=\"nofollow\">http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.onrowdatabound.aspx

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