How update DB table with DataSet
- by Paul
I am begginer with ADO.NET , I try update table with DataSet.
O client side I have dataset with one table. I send this dataset on service side (it is ASP.NET Web Service).
On Service side I try update table in database, but it dont 't work.
public bool Update(DataSet ds)
{
SqlConnection conn = null;
SqlDataAdapter da = null;
SqlCommand cmd = null;
try
{
string sql = "UPDATE * FROM Tab1";
string connStr = WebConfigurationManager.ConnectionStrings["Employees"].ConnectionString;
conn = new SqlConnection(connStr);
conn.Open();
cmd=new SqlCommand(sql,conn);
da = new SqlDataAdapter(sql, conn);
da.UpdateCommand = cmd;
da.Update(ds.Tables[0]);
return true;
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (conn != null)
conn.Close();
if (da != null)
da.Dispose();
}
}
Where can be problem?
