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 ?.
Auto Increment ID
18239
22-Feb-2011
mahesh kasar
18-Nov-2013Horas Panjaitan
22-Mar-2013What if I change integer code as K001
please help me
Anonymous User
25-Oct-2011Debug 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
24-Oct-2011I followed your snippet however I am getting an error "Input string was not in a correct format." Highlighted in red.
Here's the snippet
Any idea why it causes this error? Thanks.
Uttam Misra
22-Feb-20111.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
22-Feb-2011{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();
}