Querystring值未在URL中清除 [英] Querystring value is not getting cleared in URL

问题描述

我正在尝试清除我的网址中的Querystring值，但下面的工作不正确是我的代码..请找出解决方案

Hi,
I am trying to clear my Querystring value in my URL but it''s not working below is my code..Please find out the solution

SqlConnection cnn = new SqlConnection(Conn);
                SqlCommand cmd = new SqlCommand("Update tbl_Country set Name='"+txtName.Text.Trim()+"',CountryImg='"+Img+"' where Id="+id+"", cnn);
                cnn.Open();
                cmd.ExecuteNonQuery();
                FillGrid();
                txtName.Text = "";
                ClientScript.RegisterStartupScript(this.GetType(), "Alert", "<script language='javascript'>alert('Country Updated successfully')</script>");
                //Request.QueryString.Remove("id");
                //Request.QueryString.Clear();
                PropertyInfo isReadOnly = typeof(System.Collections.Specialized.NameValueCollection).GetProperty("IsReadOnly", BindingFlags.Instance | BindingFlags.NonPublic);
                isReadOnly.SetValue(this.Request.QueryString, false, null);
                this.Request.QueryString.Remove("id");
                cnn.Close();

推荐答案

您不能直接删除查询字符串。它是HttpRequest对象的readonly属性。您可以从Request对象中读取所有查询字符串并根据需要创建新的查询字符串，并使用新的查询字符串Response.Redirect该页面。

链接将对您有所帮助。

You can not directly remove query string. It is readonly property for HttpRequest object. What you can just read all querystring from Request object and create new querystring as you needed and Response.Redirect that page with new querystring.
The Link will be helpful for you.

var nameValueCollection = HttpUtility.ParseQueryString(HttpContext.Current.Request.QueryString.ToString());
nameValueCollection.Remove(tenantPropertyName);
string url = HttpContext.Current.Request.Path + "?" + nameValueCollection;

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