Question

I am trying to retrieve an image from database & showing it to gridview.But It shows the Error in .ashx file that

SqlCommand command = new SqlCommand(
    "select Image from ImageStore where ImageID=" + imageid, connection); 
SqlDataReader dr = command.ExecuteReader(); dr.Read(); 
context.Response.BinaryWrite((Byte[])dr[0]);

Incorrect syntax near ‘=’

How to solve it

Answer 1

Do something like this:

if(imageid != null)
{
    SqlCommand command = new SqlCommand("
          select Image from ImageStore where ImageID=" + imageid, connection); 
    SqlDataReader dr = command.ExecuteReader();
    dr.Read();
    context.Response.BinaryWrite((Byte[])dr[0]);
}
else
{
    SqlCommand command = new SqlCommand("
          select Image from ImageStore where ImageID=0", connection); 
    SqlDataReader dr = command.ExecuteReader();
    dr.Read();
    context.Response.BinaryWrite((Byte[])dr[0]);
}