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我在寫一個檢查SQL表中是否有數據的進程。WebService檢查SQL表中是否有數據
然後我想根據是否存在做一些事情。
所以,我已經連接到數據庫的這段代碼,它正在選擇我想從表中獲取的數據。
public List<MedidasAdoptar> leerMedidasAdoptar()
{
DataSet Datos = new DataSet();
string connectionString = "Initial Catalog=MyDatabase;Data Source=MyServer;Integrated Security=false;User ID=SQLUser;Password=SQLPass;";
string selectCommand =
"SELECT [Número medida], [Cód_ Cliente], [Nombre Cliente], [Cód_ obra], [Nombre obra], Tipo, [Cód_ Medida], [Descripción Medida], [Respuesta Medida] FROM [MyDatabase$My table] " +
"WHERE [Cód_ Cliente] = "+codigoCliente+" AND [Cód_ obra] = "+codigoObra;
using (var MyConnection = new SqlConnection(connectionString))
using (var MyDataAdapter = new SqlDataAdapter(selectCommand, MyConnection))
{
MyDataAdapter.SelectCommand.CommandType = CommandType.Text;
MyDataAdapter.Fill(Datos);
MyDataAdapter.Dispose();
MyConnection.Close();
}
int i;
//Right here (If it is possible) I want to determine if there is some data in table
try
{
//...doing some stuff
} catch (SqlException e)
{
string msg = "";
System.Console.WriteLine(msg);
return new List<MedidasAdoptar>();
}
問題是什麼?你剛纔說過你想做點什麼,這是你使用的代碼,但是你沒有提出任何問題或問題。 – Jim 2012-07-12 16:06:42
我在標題中說。我想檢查表中是否有一些數據。 – HaOx 2012-07-12 16:15:49