关于 c#:Fileupload inside detailsview in edit mode

Fileupload inside detailsview in edit mode

您好，我尝试在详细信息视图中添加文件上传，我在此处附上我的代码中的一些部分：

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<asp:DetailsView ID="DetailsView1" runat="server" Height="50px" Width="586px"
DefaultMode="Edit" AutoGenerateRows="False" BorderColor="White"
BorderStyle="None" DataSourceID="EntityDataSource1" GridLines="None" DataKeyNames="UserName" OnItemUpdated="DetailsView1_ItemUpdated" ONItemEditing="DetailsView1_ItemEditing">

然后文件上传控件被放置在模板字段内：

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，数据源是：

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<asp:EntityDataSource ID="EntityDataSource1" runat="server"
ConnectionString="name=mesteriEntities" DefaultContainerName="mesteriEntities"
EnableFlattening="False" EntitySetName="Users"
EnableUpdate="True" AutoGenerateWhereClause="True"
EnableInsert="True">
<WhereParameters>

</WhereParameters>
</asp:EntityDataSource>

背后的代码：

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protected void DetailsView1_ItemEditing(object sender, DetailsViewInsertEventArgs e)
{
FileUpload fu1 = (FileUpload)DetailsView1.FindControl("FileUpload1");
if (fu1 == null)
e.Cancel = true;
if (fu1.HasFile)
{
try
{
string fileName = Guid.NewGuid().ToString();
string virtualFolder ="~/UserPics/";
string physicalFolder = Server.MapPath(virtualFolder);
// StatusLabel.Text ="Upload status: File uploaded!";
string extension = System.IO.Path.GetExtension(fu1.FileName);
fu1.SaveAs(System.IO.Path.Combine(physicalFolder, fileName + extension));
e.Values["foto"] = System.IO.Path.Combine(physicalFolder, fileName + extension);
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
else
e.Cancel = true;

}

我不确定为什么不起作用。它不会将文件上传到服务器上，也不会在文件的数据库中添加引用。为什么我在这里做错了？

谢谢你

据我所知(通过查看类文档：DetailsView Class)没有要处理的 OnItemEditing 事件？

但是有一个 DetailsView.ItemUpdating 事件看起来可以解决问题：

Occurs when an Update button within a DetailsView control is clicked,
but before the update operation.

我还认为找不到 FileUpload 控件，因为 FindControl 方法没有搜索它包含的控件的完整层次结构。

尝试使用以下方法并像这样修改您的代码：

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FileUpload fu1 = (FileUpload)FindControl(DetailsView1,"FileUpload1");

...

private Control FindControl(Control parent, string id)
{
foreach (Control child in parent.Controls)
{
string childId = string.Empty;
if (child.ID != null)
{
childId = child.ID;
}

if (childId.ToLower() == id.ToLower())
{
return child;
}
else
{
if (child.HasControls())
{
Control response = FindControl(child, id);
if (response != null)
return response;
}
}
}

return null;
}