文本如何转换为图片？
从数据库中读出的一段文本，如何转换为jpg图片显示呢？求代码

------解决方案--------------------
那个不是文本是二进制流，你得有读取二进制流的页面；
public DataRow GetBookDetail(int BookId)
{
string strsql;
DataSet myDs;
try
{
strsql="select BookType.Name as BookTypeName,book.id,book.name,author,price,type,publisher,Description,translator,discount,hits,status,sales,image=case when(not Cover is null) then ' <img src=ReadBookCover.aspx?id='+cast(book.id as varchar(10))+' Border=1 width=80 height=120>' else ' <img src=img/pic.jpg border=1 width=80 height=120>' end from book join BookType on book.type=booktype.id where Book.id="+BookId;
myDs=ExecuteSql4Ds(strsql);
return myDs.Tables[0].Rows[0];
}
catch(System.Data.SqlClient.SqlException er)
{
throw new Exception(er.Message);
}

}
读取二进制流的页面代码：
DataView myDv;
int id=int.Parse(Request.QueryString["id"].Trim());
SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=bookshop;Integrated Security=True");
string cmdText = "select cover from book where id="+id+"";
con.Open();
SqlDataAdapter sda = new SqlDataAdapter(cmdText,con);
DataSet ds = new DataSet("ds");
sda.Fill(ds);
myDv = ds.Tables[0].DefaultView;
con.Close();

try
{
Response.ContentType = "image/*";
Response.BinaryWrite((byte[])myDv[0]["Cover"]);
}
catch
{
Response.Write("/img/pic.jpg");
}