如何通过引用或URL获得previous页值 [英] how to get the value from previous page through reference or url

问题描述

这是我的code的页面，通过它我要传递的值

 保护无效UpdateDriver（对象发件人，EventArgs的发送）
        {
            按钮BTN =（按钮）发送;
            GridViewRow GVR =（GridViewRow）btn.NamingContainer;
            HiddenField隐藏=（HiddenField）gvr.Cells [0] .FindControl（hdnID）;
            INT用户ID = Convert.ToInt32（hid.Value）;
            字符串URL =UpdateDriver.aspx？ +用户名=+用户名;
            的Response.Redirect（URL）;
           // BalUsers.UpdateDriver（）;
         // HiddenField隐藏=（HiddenField）gridview1.Cells [0] .FindControl（hdnID）;
          // BalUsers
        }
 

因此​​，在更新驱动程序页面我想要得到的用户名，并将其传递给我的CommandText

 保护无效的button1_Click（对象发件人，EventArgs的发送）
        {
            myconnection.Open（）;            cmd.CommandText =。UPDATE [Ovms_New] [DBO] [tbl_driver] SET [lisenceNO]​​ =（'@lisenceNO'），[liscenceType] =（'@liscenceType'），其中（用户ID ='@UserID'）;
            cmd.ExecuteNonQuery（）;
            myconnection.Close（）;
          // BalUsers.UpdateDriver（Convert.ToInt32（TextnewNo.Text），TextChangeType.Text）;
        }
 

如何获取值，并将其传递给查询
在此先感谢：）

解决方案

  HttpContext.Current.Request.QueryString [用户名];
 

或

 使用的Request.QueryString [0]
 

如果那是你传递的唯一参数。虽然不会跟着这一点，如果我是你。这将打破，如果你想传递的参数和放大器;更改在previous页面的顺序。

请注意：为了完成起见，我建议您加密为安全起见查询字符串

this is my code for the page through which I want to Pass the Value

protected void UpdateDriver(object sender, EventArgs e) 
        {
            Button btn = (Button)sender;
            GridViewRow gvr = (GridViewRow)btn.NamingContainer;
            HiddenField hid = (HiddenField)gvr.Cells[0].FindControl("hdnID");
            int UserID = Convert.ToInt32(hid.Value);
            String Url = "UpdateDriver.aspx?" + "UserID=" + UserID;
            Response.Redirect(Url);
           // BalUsers.UpdateDriver();
         //   HiddenField hid = (HiddenField)gridview1.Cells[0].FindControl("hdnID");
          //  BalUsers
        }

So at the update driver page i WANT to get the UserID and pass it to my CommandText

protected void Button1_Click(object sender, EventArgs e)
        {
            myconnection.Open();

            cmd.CommandText = "UPDATE [Ovms_New].[dbo].[tbl_driver] SET [lisenceNO] = ('@lisenceNO'),[liscenceType] = ('@liscenceType') WHERE (UserID = '@UserID')";
            cmd.ExecuteNonQuery();
            myconnection.Close();
          //  BalUsers.UpdateDriver(Convert.ToInt32(TextnewNo.Text), TextChangeType.Text);
        }

how to get that value and pass it to the query thanks In Advance :)

解决方案

HttpContext.Current.Request.QueryString["UserID"];

or

Use Request.QueryString[0] 

if thats the only parameter you're passing. Although won't follow this if I were you. This will break if you wanted to pass more parameters & change the order in the previous page.

Note: For the sake of completion, I would suggest you to encrypt the querystring for the sake of security.

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