Mega Code Archive
Delete data from database table using SqlDataAdapter
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using System;
using System.Data;
using System.Data.SqlClient;
class PropagateDeletes {
static void Main() {
string connString = "server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI";
string qry = @"select * from employee ";
string del = @"delete from employee where id = @id";
SqlConnection conn = new SqlConnection(connString);
try {
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = new SqlCommand(qry, conn);
DataSet ds = new DataSet();
da.Fill(ds, "employee");
DataTable dt = ds.Tables["employee"];
SqlCommand cmd = new SqlCommand(del, conn);
cmd.Parameters.Add("@id",SqlDbType.Int, 4, "id");
string filt = @"firstname = 'o' and lastname = 'B'";
foreach (DataRow row in dt.Select(filt)) {
row.Delete();
}
da.DeleteCommand = cmd;
da.Update(ds, "employee");
foreach (DataRow row in dt.Rows) {
Console.WriteLine(
"{0} {1}",
row["firstname"].ToString().PadRight(15),
row["lastname"].ToString().PadLeft(25));
}
} catch(Exception e) {
Console.WriteLine("Error: " + e);
} finally {
conn.Close();
}
}
}
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