How to retrive the DropDownListValue to TextBox using asp.n

bro this is my [email protected] mail id u just drop the Text Mail to our person mail please bro Help me i wait ur replayy....broooo

please share your mail id i send my teamviewer Crenditals bro...

iam also try but comming Error can u take my system Teamviewer...

Venkata i know your question and code i just want to know waht u get from this code any error, exception , wrong output or something else and i also suggest you try with sql query which i give u..

hi friends, Iam develop the student Registration form here student Click the Location in dropdown value generate the User Id based on location suppose student click Hyderbad -------> userid = Hyd001 student Click Hyderbad -------> user id = Hyd002 student Click chennai -----------> user id = che001 next student click increment the value.... in the below iam writing the code where iam doing wrong please let me know.... protected void dpCity_SelectedIndexChanged(object sender, EventArgs e) { SqlConnection con = new SqlConnection("Data Source=SERVER;Initial Catalog=MuraliIIT;User ID=sa;Password=rits@1234"); string s = "select count(*) from NewStudentRegistrationForm where City ='" + dpCity.SelectedItem.Value + "'"; con.Open(); SqlCommand com = new SqlCommand(s, con); int count = Convert.ToInt32(com.ExecuteScalar()); string city = dpCity.SelectedItem.Value; string GeneratedId= ""; count+= 1; if (count < 10) GeneratedId = dpCity + "00" + count.ToString(); else if (count < 100) GeneratedId = dpCity + "0" + count.ToString(); else GeneratedId = dpCity + count.ToString(); TxtUserid.Text=GeneratedId;