在“文件系统”中插入镜像文件
本文关键字:文件系统 镜像 文件 插入 | 更新日期: 2023-09-27 18:18:27
我得到这个错误:
不允许从数据类型sql_variant隐式转换为唯一标识符。使用CONVERT函数运行此查询。
矿山代码如下:
源代码:
<asp:ListView ID="ListView1" runat="server" DataKeyNames="UserId" DataSourceID="SqlDataSource1" InsertItemPosition="LastItem" >
<InsertItemTemplate>
<asp:TextBox ID="UserPicUrlTextBox" runat="server" Text='<%# Bind("UserPicUrl") %>' />
<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Button ID="InsertButton" runat="server" CommandName="Insert" Text="Insert" />
<asp:Button ID="CancelButton" runat="server" CausesValidation="false" CommandName="Cancel" Text="Clear" />
</InsertItemTemplate>
</asp:ListView>
矿山插入参数为:
<InsertParameters>
<asp:Parameter Name="UserId" Type="Object" />
<asp:Parameter Name="Category" Type="String" />
<asp:Parameter Name="Class" Type="Int32" />
<asp:Parameter Name="UserPicUrl" Type="String" />
.
.
</InsertParameters>
c# :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Security;
public partial class userProfile : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void SqlDataSource1_Selecting(object sender, SqlDataSourceSelectingEventArgs e)
{
// Get a reference to the currently logged on user
MembershipUser currentUser = Membership.GetUser();
// Determine the currently logged on user's UserId value
Guid currentUserId = (Guid)currentUser.ProviderUserKey;
// Assign the currently logged on user's UserId to the @UserId parameter
e.Command.Parameters["@UserId"].Value = currentUserId;
}
protected void SqlDataSource1_Inserting(object sender, SqlDataSourceCommandEventArgs e)
{
FileUpload FileUpload1 = (FileUpload)ListView1.InsertItem.FindControl("FileUpload1");
string virtualFolder = "~/UserPics/";
string physicalFolder = Server.MapPath(virtualFolder);
string fileName = Guid.NewGuid().ToString();
string extension = System.IO.Path.GetExtension(FileUpload1.FileName);
FileUpload1.SaveAs(System.IO.Path.Combine(physicalFolder, fileName + extension));
string UserPicUrl = virtualFolder + fileName + extension;
e.Command.Parameters["@UserPicUrl"].Value = UserPicUrl;
}
}
目标:我试图在文件夹中存储图像,并在数据库中保存相应的Url。
SqlDataSource1_Inserting
add set UserId value作为插入参数
e.Command.Parameters["@UserId"].Value =(Guid)Membership.GetUser().ProviderUserKey;