How to code in csharp when exist update if not exist insert to database?

Question

hi everyone, Help me to code my csharp project, i just want to upsert code....if exist update and if not exist insert to my sql server database table.

Satyapriya Nayak · Answer

Hi black, Here is you desired code.Run the attachments. Create a table employee as below Create table employee(eid varchar(50)primary key,ename varchar(50)) Create a stored procedure display as below ALTER PROCEDURE dbo.display @eid varchar(50), @ename varchar(50) AS IF EXISTS (SELECT * FROM employee WHERE eid = @eid) BEGIN update employee set ename=@ename where eid=@eid END ELSE BEGIN insert employee(eid,ename) values (@eid,@ename) END Default.aspx code Untitled Page 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; SqlDataAdapter sqlda; DataSet ds; protected void btn1_Click(object sender, EventArgs e) { SqlConnection con = new SqlConnection(strConnString); con.Open(); com = new SqlCommand("display", con); com.Parameters.Add("@eid", SqlDbType.VarChar).Value = txtUserId.Text; com.Parameters.Add("@ename", SqlDbType.VarChar).Value = txtUserName.Text; com.CommandType = CommandType.StoredProcedure; com.ExecuteNonQuery(); con.Close(); bindgrid(); } protected void Page_Load(object sender, EventArgs e) { bindgrid(); } void bindgrid() { SqlConnection con = new SqlConnection(strConnString); str = "select * from employee"; com = new SqlCommand(str, con); ds = new DataSet(); com.Connection = con; com.CommandText = "SELECT * FROM employee"; sqlda = new SqlDataAdapter(com); sqlda.Fill(ds, "employee"); GridView1.DataSource = ds; GridView1.DataBind(); } } Thanks If this post helps you mark it as answer

Prabhu Raja · Answer

Hi Black, IF EXISTS ( SELECT * FROM tablename WHERE columnname = @ Id ) BEGIN --UPDATE HERE END ELSE BEGIN -- INSERT HERE END --------------------------------------------- If it helps you, mark it as "Correct Answer"