FileUpload.HasFile始终返回false [英] FileUpload.HasFile always return false

问题描述

大家好，

我正在内容表的HTMLTable中使用Fileupload Control.内容页面和母版页面均不包含Updatepanel.但是，母版页具有ScriptManager.

它总是返回FileUpload.HasFile为false，PostedFile为null.在单击按钮"以上传文件之前，甚至选择了一个文件.

如何克服这个问题?

问候
Aman

Hi All,

I am using Fileupload Control in HTMLTable of Content Page. Neither Content Page nor Master page contain Updatepanel. However, Master page has ScriptManager.

It always return FileUpload.HasFile false and PostedFile is null. Even a file was selected, before clicking on Button to uploaded file.

How to overcome from this problem?

Regards
Aman

推荐答案

使用下面的C#代码.此代码永远不会返回错误或其他错误.


如果(FileUpload2.PostedFile！= null&& FileUpload2.FileName！= null)
{
byte [] imgdisp =新的byte [FileUpload2.PostedFile.ContentLength];
HttpPostedFile图片= FileUpload2.PostedFile;
image.InputStream.Read(imgdisp，0，(int)FileUpload2.PostedFile.ContentLength);

//SqlCommand cmd =新的SqlCommand(插入iu(img1)值(@ img1)"，conn);

SqlCommand cmd =新的SqlCommand("pentry"，con);
cmd.CommandType = CommandType.StoredProcedure;

cmd.Parameters.Add("@ pphoto"，SqlDbType.Image，imgdisp.Length).Value = imgdisp;
con.Open();
cmd.ExecuteNonQuery();
con.Close();
}

Use That following C# code. this code never return error or something others.


if (FileUpload2.PostedFile != null && FileUpload2.FileName != null)
{
byte[] imgdisp = new byte[FileUpload2.PostedFile.ContentLength];
HttpPostedFile image = FileUpload2.PostedFile;
image.InputStream.Read(imgdisp, 0, (int)FileUpload2.PostedFile.ContentLength);

//SqlCommand cmd = new SqlCommand("insert into iu(img1) values(@img1)", conn);

SqlCommand cmd = new SqlCommand("pentry", con);
cmd.CommandType = CommandType.StoredProcedure;

cmd.Parameters.Add("@pphoto", SqlDbType.Image, imgdisp.Length).Value = imgdisp;
con.Open();
cmd.ExecuteNonQuery();
con.Close();
}

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