后台有：
Image1.ImageUrl = "getimage.ashx?xingming=" + Session["name"] + "&isThumb=0";
前台有：
<asp:Image ID="Image1" runat="server" Width="200" Height="200" />
这两行能互相配合，成功显示出图片。
问：以下代码如何改才能正确显示出图片？（注：<%# Eval("教师姓名")%>不要改，它能正确显示数据）
<asp:Image ID="Image1" runat="server" Width="200" Height="200" ImageUrl='getimage.ashx?xingming=" + <%# Eval("教师姓名")%> + "&isThumb=0' />
附getimage.ashx代码如下：
- C# code
//此处略去usingnamespace prjSRI01{ /// <summary> /// Summary description for $codebehindclassname$ /// </summary> [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] public class getimage : IHttpHandler { public void ProcessRequest(HttpContext context) { // Is id empty?// if(!String.IsNullOrEmpty(context.Request.QueryString["Id"])) if (!String.IsNullOrEmpty(context.Request.QueryString["xingming"])) { // No, retrieve the image from the database. SqlConnection sqlCon = new SqlConnection(); SqlCommand sqlCmd = new SqlCommand(); SqlDataReader sqlRdr; string imageType; if(context.Request.QueryString["isThumb"].Equals("0")) imageType = "Thumbnail"; // get thumbnail from the database. else imageType = "Image"; // get original image from the database. sqlCon.ConnectionString = ConfigurationManager.ConnectionStrings["dbSampleConnectionString"].ConnectionString.ToString(); //sqlCon.ConnectionString = @"Data Source=ARISJB\SQLEXPRESS;" + // "Initial Catalog=dbSample;" + // "Integrated Security=True"; if(sqlCon.State.Equals(ConnectionState.Closed)) sqlCon.Open(); // sqlCmd.CommandText = String.Concat("SELECT ", imageType, " FROM tblSRI WHERE ID=@Id"); sqlCmd.CommandText = String.Concat("SELECT ", imageType, " FROM tblSRI WHERE Username=@xm"); sqlCmd.CommandType = CommandType.Text; sqlCmd.Connection = sqlCon;// sqlCmd.Parameters.AddWithValue("@Id", context.Request.QueryString["Id"]); sqlCmd.Parameters.AddWithValue("@xm", context.Request.QueryString["xingming"]); // Run the query. sqlRdr = sqlCmd.ExecuteReader(); // Is record found? if(sqlRdr.HasRows) // Yes, read the first record. if(sqlRdr.Read()) // Return the image in binary format. if (!sqlRdr[imageType].Equals(System.DBNull.Value )) context.Response.BinaryWrite((byte[])sqlRdr[imageType]); sqlRdr.Close(); if(sqlCon.State.Equals(ConnectionState.Open)) sqlCon.Close(); } } public bool IsReusable { get { return false; } } }}------解决方案--------------------------------------------------------
<asp:Image ID="Image1" runat="server" Width="200" Height="200"
ImageUrl='<%# Page.ResolveUrl("~/") + "getimage.ashx?xingming=" + Eval("教师姓名") + "&isThumb=0"%>' />