Error: A potentially dangerous Request.Form value was detected from the client

See more:

C#

ASP.NET

Hi I am facing this error as when i inserting the text for the first time its working fine but when i try to edit the text by clicking on editbtn and then the code will change the to edit panel and bind the text of this job (note when i click on edit and code binding the text it will show into text as it has been stored into database) and when i finish editing and click on update then i am finding this error.

When User Inserting texts for first time code:

  string CompInfo = AboutComptxtbx.Text;
                CompInfo = CompInfo.Replace(System.Environment.NewLine, "<br />");
//...
cmd.Parameters.AddWithValue("@EmpOvViw", CompInfo);

When user click on To edit the job, (binding the texts from table inside database to textboxes)

string EditCompInfo = EditJobEmpOvViwtxtbx.Text;
            EditCompInfo = EditCompInfo.Replace(System.Environment.NewLine, "<br />");
//...

EditJobcmd.Parameters.AddWithValue("@EmpOvViw", EditCompInfo);

The error message:

A potentially dangerous Request.Form value was detected from the client (ctl00$ContentPlaceHolder1$EditJobEmpOvViwtxtbx="...rritories.<br /><br />The curr...").