【C#】SQL資料庫助手類1.0（自用）

using System;
using System.Collections.Generic;
using System.Text;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;

namespace Erp.DBUtility
{
    public class YSqlHelper
    {
        //Sql連線語句
        private static string connectionString = ConfigurationManager.AppSettings["ConnectionString"];

        /// <summary>執行不帶引數的增刪改SQL語句或儲存過程 ，返回受影響的行數</summary>
        public static int ExecuteNonQuery(string cmdText, CommandType ct)
        {
            int res = 0;//受影響的行數
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                try
                {
                    conn.Open();//開啟資料庫連結
                    using (SqlCommand cmd = new SqlCommand(cmdText, conn))
                    {
                        cmd.CommandType = ct;
                        res = cmd.ExecuteNonQuery();//執行Sql語句並受影響的行數
                    }
                }
                catch
                {

                }
                finally
                {
                    if (conn.State == ConnectionState.Open)//判斷連線是否處於開啟狀態
                    {
                        conn.Close();//關閉與資料庫的連結
                    }
                }
            }
            return res;
        }

        /// <summary>  執行帶引數的增刪改SQL語句或儲存過程，返回受影響的行數</summary>
        public static int ExecuteNonQuery(string cmdText, SqlParameter[] paras, CommandType ct)
        {
            int res = 0;//受影響的行數
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                try
                {
                    conn.Open();//開啟資料庫連結
                    using (SqlCommand cmd = new SqlCommand(cmdText, conn))
                    {
                        cmd.CommandType = ct;
                        cmd.Parameters.AddRange(paras);
                        res = cmd.ExecuteNonQuery();//執行Sql語句並受影響的行數
                    }
                }
                catch
                {

                }
                finally
                {
                    if (conn.State == ConnectionState.Open)//判斷連線是否處於開啟狀態
                    {
                        conn.Close();//關閉與資料庫的連結
                    }
                }
            }
            return res;
        }

        /// <summary> 執行不帶引數的查詢SQL語句或儲存過程，返回DataTable物件</summary>
        public static DataTable ExecuteQueryDataTable(string cmdText, CommandType ct)
        {
            DataTable dt = new DataTable();
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                try
                {
                    conn.Open();//開啟資料庫連結
                    using (SqlCommand cmd = new SqlCommand(cmdText, conn))
                    {
                        cmd.CommandType = ct;
                        using (SqlDataReader sdr = cmd.ExecuteReader(CommandBehavior.CloseConnection))
                        {
                            dt.Load(sdr);
                        }
                    }
                }
                catch
                {

                }
                finally
                {
                    if (conn.State == ConnectionState.Open)//判斷連線是否處於開啟狀態
                    {
                        conn.Close();//關閉與資料庫的連結
                    }
                }
            }
            return dt;
        }

        /// <summary> 執行帶引數的查詢SQL語句或儲存過程，返回DataTable物件</summary>
        public static DataTable ExecuteQueryDataTable(string cmdText, SqlParameter[] paras, CommandType ct)
        {
            DataTable dt = new DataTable();
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                try
                {
                    conn.Open();//開啟資料庫連結
                    using (SqlCommand cmd = new SqlCommand(cmdText, conn))
                    {
                        cmd.CommandType = ct;
                        cmd.Parameters.AddRange(paras);
                        using (SqlDataReader sdr = cmd.ExecuteReader(CommandBehavior.CloseConnection))
                        {
                            dt.Load(sdr);
                        }
                    }
                }
                catch
                {

                }
                finally
                {
                    if (conn.State == ConnectionState.Open)//判斷連線是否處於開啟狀態
                    {
                        conn.Close();//關閉與資料庫的連結
                    }
                }
            }
            return dt;
        }

        /// <summary> 執行不帶引數的查詢SQL語句或儲存過程，返回DataSet物件</summary>
        public static DataSet ExecuteQueryDataSet(string cmdText, CommandType ct)
        {
            DataSet ds = new DataSet();
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                try
                {
                    conn.Open();//開啟資料庫連結
                    using (SqlCommand cmd = new SqlCommand(cmdText, conn))
                    {
                        cmd.CommandType = ct;
                        using (SqlDataAdapter da = new SqlDataAdapter(cmd))
                        {
                            da.Fill(ds, "ds");
                        }
                    }
                }
                catch
                {

                }
                finally
                {
                    if (conn.State == ConnectionState.Open)//判斷連線是否處於開啟狀態
                    {
                        conn.Close();//關閉與資料庫的連結
                    }
                }
            }
            return ds;
        }

        /// <summary> 執行帶引數的查詢SQL語句或儲存過程，返回DataSet物件</summary>
        public static DataSet ExecuteQueryDataSet(string cmdText, SqlParameter[] paras, CommandType ct)
        {
            DataSet ds = new DataSet();
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                try
                {
                    conn.Open();//開啟資料庫連結
                    using (SqlCommand cmd = new SqlCommand(cmdText, conn))
                    {
                        cmd.CommandType = ct;
                        cmd.Parameters.AddRange(paras);
                        using (SqlDataAdapter da = new SqlDataAdapter(cmd))
                        {
                            da.Fill(ds, "ds");
                        }
                    }
                }
                catch
                {

                }
                finally
                {
                    if (conn.State == ConnectionState.Open)//判斷連線是否處於開啟狀態
                    {
                        conn.Close();//關閉與資料庫的連結
                    }
                }
            }
            return ds;
        }

        /// <summary>查詢資料是否存在</summary>
        public static bool ExecuteDataIsExistByData(string sqlStr, CommandType commandType)
        {
            bool iss = false;
            DataSet ds = ExecuteQueryDataSet(sqlStr, commandType);
            for (int i = 0; i < ds.Tables.Count; i++)
            {
                if (ds.Tables[i].Rows.Count > 0) iss = true;
            }
            return iss;
        }

        /// <summary>查詢資料是否存在 </summary>
        public static bool ExecuteDataIsExistByData(string sqlStr, SqlParameter[] paras, CommandType commandType)
        {
            bool iss = false;
            DataSet ds = ExecuteQueryDataSet(sqlStr, paras, commandType);
            for (int i = 0; i < ds.Tables.Count; i++)
            {
                if (ds.Tables[i].Rows.Count > 0) iss = true;
            }
            return iss;
        }
        /// <summary>查詢增刪改資料操作是否成功 </summary>
        public static bool ExecuteDataIsExistByInt(string sqlStr, CommandType commandType)
        {
            int ds = ExecuteNonQuery(sqlStr, commandType);
            bool iss = ds > 0 ? true : false;
            return iss;
        }
        /// <summary>查詢增刪改資料操作是否成功 </summary>
        public static bool ExecuteDataIsExistByInt(string sqlStr, SqlParameter[] paras, CommandType commandType)
        {
            int ds = ExecuteNonQuery(sqlStr, paras, commandType);
            bool iss = ds > 0 ? true : false;
            return iss;
        }
    }
}