How to dynamic increment using Dropdown list control with character

Question

Hi dear. please help me if any one knows my doubts. How to dynamic increment using Dropdown list control with character for example E001 Reply me soon as possible. Thanks&Regs Magesh.A

Satyapriya Nayak · Answer

Hi Magesh, Try this... Untitled Page Width="100px"> Text="Insert Data" /> using System; using System.Collections; 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; namespace Dynamic_increment_using_Dropdown { 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) { if (!IsPostBack) { DropDownList1.Items.Add("Select"); SqlConnection con = new SqlConnection(strConnString); str = "select count(*) from employee"; com = new SqlCommand(str, con); con.Open(); count = Convert.ToInt16(com.ExecuteScalar()) + 1; DropDownList1.Items.Add("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('" + DropDownList1.SelectedItem.Text.Trim() + "','" + txt_empname.Text.Trim() + "'," + txt_sal.Text.Trim() + ")"; com = new SqlCommand(str, con); com.ExecuteNonQuery(); con.Close(); Label4.Text = "Records successfully Inserted"; } } } Thanks

Datta Kharad · Answer

Hi You can refer these articles:- http://www.c-sharpcorner.com/UploadFile/mahesh/RandomNumber11232005010428AM/RandomNumber.aspx http://stackoverflow.com/questions/3640174/generating-every-character-combination-up-to-a-certain-word-length