本文整理汇总了C#中System.Data.OleDb.OleDbCommand.ExecuteScalar方法的典型用法代码示例。如果您正苦于以下问题：C# OleDbCommand.ExecuteScalar方法的具体用法？C# OleDbCommand.ExecuteScalar怎么用？C# OleDbCommand.ExecuteScalar使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Data.OleDb.OleDbCommand的用法示例。
在下文中一共展示了OleDbCommand.ExecuteScalar方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: CreateMyOleDbCommand
public void CreateMyOleDbCommand(string queryString,
OleDbConnection connection)
{
OleDbCommand command = new OleDbCommand(queryString, connection);
command.Connection.Open();
command.ExecuteScalar();
connection.Close();
}示例2: Main
//引入命名空间
using System;
using System.Data;
using System.Data.OleDb;
using System.Data.SqlClient;
class MainClass
{
static void Main(string[] args)
{
string ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:\Northwind.mdb";
OleDbConnection conn = new OleDbConnection(ConnectionString);
conn.Open();
OleDbCommand cmd = new OleDbCommand();
cmd.CommandText = "SELECT Count(*) FROM Customers";
cmd.Connection = conn;
int counter = (int)cmd.ExecuteScalar();
Console.WriteLine("Total rows returned are :" + counter.ToString());
conn.Close();
}
}