如何从文件夹nad中检索图像在图像控件中显示它。 [英] How to retrive an image from folder nad show it in an image control.

问题描述

亲爱的先生，
我的asp.net应用程序中的
，我将所有员工信息存储在tbl_employee中。但是我在这里保存了图像的路径和他在empimage文件夹中的图像。



如何根据我选择的员工检索此员工图像并将其显示在图像控件上。

  protected   void  btnReset0_Click（对象 sender，EventArgs e）
 {
  string  path =  ; 
 尝试 
 {
 cmd.CommandText =  从tblEmployeeInformation中选择EmpName，Department，StaffType，SubjectPrefer，Experience，Qualification，EmpId，image，其中EmpName =' + DropDownList1.SelectedValue +   '; 
 cmd.Connection = con; 
  if （con.State == ConnectionState.Closed）
 con.Open（）; 
 dr = cmd.ExecuteReader（）; 
  if （dr.Read（））
 {
 txtEmpName.Text = dr [  EmpName]。ToString（）; 
 ddlDepaartment.SelectedValue = dr [  Department]。ToString（）; 
 ddlSubPreference.SelectedValue = dr [  SubjectPrefer]。ToString（）; 
 ddlExperience.SelectedValue = dr [ 经验]。ToString（）; 
 ddlQualification.SelectedValue = dr [  Qualification]。ToString（）; 
 txtEmpId.Text = dr [  EmpId]。ToString（）; 
 path = dr [  image]。ToString（）; 
  if （path！=  null ）
 {
 Image1。 ImageUrl = path; 
} 
} 
  else  
 Response.Write（ < script LANGUAGE ='JavaScript'> alert（' -  + DropDownList1.SelectedValue +    - '）< / script>）; 
} 
  catch （例外情况）
 {
 Response.Write（ < script LANGUAGE ='JavaScript'> alert（' + ex.Message +   '）< / script>）; 
} 
} 

这里是从数据库检索到路径的路径变量，但不显示图像控件中的图像。

解决方案

将返回的图像路径从数据库设置为 ImageUrl 来自这样的代码隐藏

 Image1.ImageUrl =   Image_Path ; 

Dear sir,
in my asp.net application, I stored all the employee information inside tbl_employee.But here I save the path of an image and his image in empimage folder.

How to retrieve this employee image and show it on an image control as per the employees, I have selected.

protected void btnReset0_Click(object sender, EventArgs e)
  {
      string path = "";
      try
      {
          cmd.CommandText = "select EmpName,Department,StaffType,SubjectPrefer,Experience,Qualification,EmpId,image from tblEmployeeInformation where EmpName='" + DropDownList1.SelectedValue + "'";
          cmd.Connection = con;
          if (con.State == ConnectionState.Closed)
              con.Open();
          dr = cmd.ExecuteReader();
          if (dr.Read())
          {
              txtEmpName.Text = dr["EmpName"].ToString();
              ddlDepaartment.SelectedValue = dr["Department"].ToString();
              ddlSubPreference.SelectedValue = dr["SubjectPrefer"].ToString();
              ddlExperience.SelectedValue = dr["Experience"].ToString();
              ddlQualification.SelectedValue = dr["Qualification"].ToString();
              txtEmpId.Text = dr["EmpId"].ToString();
              path = dr["image"].ToString();
              if (path != null)
              {
                  Image1.ImageUrl = path;
              }
          }
          else
              Response.Write("<script LANGUAGE='JavaScript' >alert('-"+DropDownList1.SelectedValue+"-')</script>");
      }
      catch (Exception ex)
      {
          Response.Write("<script LANGUAGE='JavaScript' >alert('" + ex.Message + "')</script>");
      }
  }

Here the path from database retrieve to the path variable, but does not show the image in image control.

解决方案

Set returned image path from database to ImageUrl from codebehind like this

Image1.ImageUrl = "Image_Path";

这篇关于如何从文件夹nad中检索图像在图像控件中显示它。的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！