(+234)07060722008 
sales@graciousnaija.com
In this
blog we will create auto generated ID in textbox at runtime dynamically. So
that user does not require filling this.
Table Creation
Create table employee(empid varchar(50),empname varchar(50),sal int)
Default.aspx code
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="EmpId" Font-Bold="True" Width="100px"></asp:Label> <asp:TextBox ID="txt_empid" runat="server"></asp:TextBox><br /> <asp:Label ID="Label2" runat="server" Text="EmpName" Font-Bold="True" Width="100px"></asp:Label> <asp:TextBox ID="txt_empname" runat="server"></asp:TextBox><br /> <asp:Label ID="Label3" runat="server" Text="Salary" Font-Bold="True" Width="100px"></asp:Label> <asp:TextBox ID="txt_sal" runat="server"></asp:TextBox><br /> </div> <asp:Button ID="btn_insert" runat="server" onclick="btn_insert_Click" Text="Insert Data" /><br /> <asp:Label ID="Label4" runat="server"></asp:Label> </form> </body> </html>
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 = "CR/15A/00" + 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"; } }
Output:
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