C# Bind SQL Server Table in Sharepoint List

It's a simple example to retrieve Records from SQLdatabase table to SharePoint list

1. Create a function to get your data from SQL server and return it to a data table.

   // your method to pull data from database to datatable   
   public DataTable GetDatafromSQL()
   {
       DataTable dataTable = new DataTable();            
       string connString = @"your connection string here";
       string query = "select * from table";
   
       SqlConnection conn = new SqlConnection(connString);        
       SqlCommand cmd = new SqlCommand(query, conn);
       conn.Open();
   
       // create data adapter
       SqlDataAdapter da = new SqlDataAdapter(cmd);
       // this will query your database and return the result to your datatable
       da.Fill(dataTable);
       conn.Close();
       da.Dispose();
       return dataTable;
   }
   

2. Create a function that loop for every item at the retrieved SQL data table and adds it to list.

    void binditems()
    {
        DataTable dt = new DataTable();
        dt= GetDatafromSQL();
   
    using (SPSite oSite=new SPSite("http://mysharepoint"))
     {
   
      using (SPWeb oWeb=oSite.RootWeb)
       {
           SPList oList = oWeb.Lists["Test"];
           foreach (DataRow row in dt.Rows) // Loop over the rows.
           {
           SPListItem oSPListItem = oList.Items.Add();
           oSPListItem["Title"] = dr["Title"].ToString();
           oSPListItem.Update();
           }
       }
    }
    }
   

Read the Function binditems(), to can bind the data from SQL to List

Note : don't forget to include this namespaces using System.Data.SqlClient; using Microsoft.SharePoint;

Check also How to achieve this in a windows application Using SharePoint Server Object Model

Check also Copy items from sql database table to SharePoint list