Window Form C#

Question

How to generate Auto Registration no. in Window form c# ado.net???

Deoraj Sharma · Answer

THANK U

Satyapriya Nayak · Answer

Table Creation Create table employee(empid varchar(50) primary keyempname varchar(50)sal int) Default.aspx code Untitled Page Width=100px> Text=Insert Data /> Default.aspx.cs code using System; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; using System.Data.SqlClient; public partial class _Default : System.Web.UI.Page { string strConnString = ConfigurationManager.ConnectionStrings[ConnectionString].ConnectionString; string str; SqlCommand com; int count; protected void Page_Load(object sender EventArgs e) { SqlConnection con = new SqlConnection(strConnString); str = select count(*) from employee; com = new SqlCommand(str con); con.Open(); count = Convert.ToInt16(com.ExecuteScalar()) + 1; txt_empid.Text = E00 + count; con.Close(); } protected void btn_insert_Click(object sender EventArgs e) { SqlConnection con = new SqlConnection(strConnString); con.Open(); str = insert into employee values(' + txt_empid.Text.Trim() + '' + txt_empname.Text.Trim() + ' + txt_sal.Text.Trim() + ); com = new SqlCommand(str con); com.ExecuteNonQuery(); con.Close(); Label4.Text = Records successfully Inserted; } }

Gopal Mahadak · Answer

make first connection to database oledbconnection con=new oledbconnection(string connection); con.open(); oledbcommand cmd=new oledbcommand(select max(regno) from tablecon) oledbdatareader dr=cmd.executereader(); while(dr.read()==true) { text1.text=dr[regno].tostring(); } read it in form load gives u autoincremented result