forum

Home / DeveloperSection / Forums / Auto Increment ID

Ask Question

Auto Increment ID

Pawan kumar1782422-Feb-2011
Sir i want to know that -how to make autoincrement id  in asp.net/C# with out using store-procedure in sql..
can it make by a Method or Function in .net ?.
asp.netasp.net 
Updated on 18-Nov-2013
Pawan kumar

Pawan kumar

Follow

Can you answer this question?

Answer

6 Answers

mahesh kasar

mahesh kasar

18-Nov-2013
use this code
Horas Panjaitan

Horas Panjaitan

22-Mar-2013
hi Sheen Buhay
What ifIchangeinteger codeasK001

please help me
Anonymous User

Anonymous User

25-Oct-2011
Hi Sheen Buhay,

Debug your code and check what value you have in dr[0].ToString(). I thing you might be getting Alphabets or symbols.

Suggestion: Don't just copy and paste the code snippet provided in the forum as those are not generalize, those are specific set of code used to accomplish a specific task. Please do modify the code according to your requirement.

Thanks
Sheen Buhay

Sheen Buhay

24-Oct-2011
Hi Mr. Singh,

I followed your snippet however I am getting an error "Input string was not in a correct format." Highlighted in red.
Here's the snippet
if (dr.Read())
                        {
                            string d = dr[0].ToString();
                            if (d == "")
                            {
                                txtstudid.Text = strTesda;
                            }
                            else
                            {
                                r = Convert.ToInt32(dr[0].ToString());
                                r = r + 1;
                                txtstudid.Text = r.ToString();
                            }

Any idea why it causes this error? Thanks.


Uttam Misra

Uttam Misra

22-Feb-2011
Pawan are you talking about Auto Increment ID in SQLServer? If yes then follow these steps without creating any method..

1.Open SQl Server Management Studio Express.
2.Go to your Database.
3.Rigth click on your Database Table Name.
4.Then Click on Modify.
5.In modify window click on your " ID" column Name.
6.Change its Data Type to int.
7.Then go to Column Prorerties below.
8.Under the "Indentity Specifications" nodes you will see (Is Indentity).
8.Set this property "Yes".




Sachindra Singh

Sachindra Singh

22-Feb-2011
Hello pawan, i hope this code will help you 

{
    public void Autogenrate() 
    { 
        int r; 
        try 
        { 
          con = new SqlConnection("data source=XYZ; user id=ABC; password=***; initial catalog=Detail"); 
       con.Open(); 
            SqlCommand cmd = new SqlCommand("Select max(id) from empp1", con); 
            SqlDataReader dr = cmd.ExecuteReader(); 
            if (dr.Read()) 
            { 
                string d = dr[0].ToString(); 
                if (d == "") 
                { 
                    id.Text = "1001";//set the value in textbox which name is id 
                } 
                else 
                { 
                    r = Convert.ToInt32(dr[0].ToString()); 
                    r = r + 1; 
                    id.Text = r.ToString(); 
                } 
            } 
            con.Close(); 
            con.Open(); 
          cmd.CommandText = "insert empp1 values('" + id.Text + "','" +   txtName.Text + "','" + txtCity.Text + "')"; 
            cmd.ExecuteNonQuery(); 
        } 
        catch (Exception ex) 
        { 
            Response.Write("<script>alert("+ex.Message+")</script>"); 
        } 
        finally 
        { 
            con.Close(); 
        }

Liked By