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 key,empname 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 table",con) oledbdatareader dr=cmd.executereader(); while(dr.read()==true) { text1.text=dr["regno"].tostring(); } read it in form load gives u autoincremented result

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