unable to update an image in a table

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In my project I am unable to update an 'image' datatype column named as 'PictureFile'.

The following is my code:
string fileName = ImagePreview.ImageUrl;
int fileLength = PhotoUpload.PostedFile.ContentLength;
int v_mem_id = 158;
byte[] imageBytes = new byte[fileLength];
PhotoUpload.PostedFile.InputStream.Read(imageBytes, 0, fileLength);
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["tnrestConnectionString"].ConnectionString);
try
{
string updateSql = "UPDATE member " + "SET PictureFile = @a,pictureFile WHERE mem_id= " + v_mem_id + " ";
SqlCommand UpdateCmd = new SqlCommand(updateSql, conn);
UpdateCmd.Parameters.Add("@a", SqlDbType.Image,10, "PictureFile");
UpdateCmd.Parameters["@a"].Value = Convert.ToByte(fileLength).ToString();

conn.Open();
UpdateCmd.ExecuteNonQuery();
}
catch (SqlException ex)
{
}

Can anyone help me out.

Posted 13-Apr-13 22:57pm

S.Rajendran from Coimbatore

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Pallavi Waikar · Answer 1 · 2013-04-13T23:08:00

Solution 1

i think u forgot to assign imageBytes = PhotoUpload.FileBytes; ...add following section in code

C#

byte[] imageBytes = new byte[fileLength];
imageBytes = PhotoUpload.FileBytes;

Posted 13-Apr-13 23:08pm

Pallavi Waikar

Prathap Gangireddy · Answer 2 · 2013-04-14T07:07:00

I think this will be helpful.

Replace all the below code

C#

string fileName = ImagePreview.ImageUrl;
int fileLength = PhotoUpload.PostedFile.ContentLength;
int v_mem_id = 158;
byte[] imageBytes = new byte[fileLength];
PhotoUpload.PostedFile.InputStream.Read(imageBytes, 0, fileLength);

with this code

C#

string fileName = ImagePreview.ImageUrl;
byte[] imageBytes = File.ReadAllBytes(fileName);
UpdateCmd.Parameters.AddWithValue("@a",imageBytes);