Error covert string to int

Question

I make one GUI form. i which i make 3 textboxes. i first textbox the no. is genrated automatically becasue i use identity in SQL. but how to display this identity no. in my first textboxe.

Satyapriya Nayak · Answer

Hi Arvind Try this.. Create table employee (empid varchar(50)empname varchar(50)sal int) Untitled Page Text=Insert Data /> 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) { if (!IsPostBack) { autogenerated(); } } void autogenerated() { 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 = count.ToString(); txt_empid.Enabled = false; 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; txt_empname.Text = ; txt_sal.Text = ; autogenerated(); } } Thanks If this post helps you mark it as answer

Aarti · Answer

Hi Try beloow line of code Int32 a = Convert .ToInt32(textBox1.Text);

Pravin Ghadge · Answer

hi Arvind ur question is not clear for me. u want to display identity value after saving the data in sql. am i correct? If yes then use datareader or adapter to fetch the record.