```csharp
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace LabelFit
{
public class SqlControl
{
private bool isInited = false;
private SqlConnection sqlConnect = new SqlConnection();
private object sqlLock = new object();
public bool Connect()
{
if (isInited)
{
return true;
}
try
{
string serverName = "192.168.1.17,1433";
string sqlName = "SecondEditionDatabase";
string userName = "OP2-A";
string userPw = "www.163.com";
//Provider=SQLOLEDB.1;Password=www.163.com;Persist Security Info=True;User ID=OP2-A;Initial Catalog=SecondEditionDatabase;Data Source=192.168.1.17,1433\(local)
//sqlConnect.ConnectionString = "Data Source=" + sqlConfig.serverName + ";Network Library = DBMSSOCN;Initial Catalog=" + sqlConfig.sqlName + ";User ID=" + sqlConfig.userName + ";PassWord=" + sqlConfig.userPw + ";Asynchronous Processing=True;MultipleActiveResultSets=True;Connect Timeout=10000";
sqlConnect.ConnectionString = "Data Source=" + serverName + ";Initial Catalog=" + sqlName + ";User ID=" + userName + ";PassWord=" + userPw + ";";
if (sqlConnect.State == ConnectionState.Closed)
{
sqlConnect.Open();
isInited = true;
}
}
catch (Exception ex)
{
}
return isInited;
}
public void Close()
{
try
{
if (sqlConnect.State == ConnectionState.Open)
{
sqlConnect.Close();
sqlConnect.Dispose();
isInited = false;
}
}
catch (Exception ex)
{
}
}
public bool ReadLast(string tableName, out string[] dataOut)
{
lock (sqlLock)
{
dataOut = new string[0];
if (isInited)
{
for (int m = 0; m < 10; m++)
{
try
{
SqlCommand sqlCommand = new SqlCommand();
sqlCommand.CommandText = "SELECT top 1 * from " + tableName + " order by id desc";
SqlDataAdapter sqlAdapter = new SqlDataAdapter(sqlCommand.CommandText, sqlConnect);
DataSet dataInfo = new DataSet();
sqlAdapter.Fill(dataInfo);
if (dataInfo.Tables[0].Rows.Count > 0)
{
dataOut = new string[dataInfo.Tables[0].Rows[0].ItemArray.Length];
for (int i = 0; i < dataInfo.Tables[0].Rows[0].ItemArray.Length; i++)
{
dataOut[i] = dataInfo.Tables[0].Rows[0].ItemArray[i].ToString();
}
}
sqlCommand.Dispose();
return true;
}
catch (Exception ex)
{
Thread.Sleep(10);
continue;
}
}
}
else
{
return false;
}
}
return false;
}
public bool InsertData(string tableName, string[] allHeads, string[] allData)
{
lock (sqlLock)
{
if (isInited)
{
SqlCommand sqlCommand = new SqlCommand();
for (int m = 0; m < 10; m++)
{
try
{
string strCmd = "INSERT INTO " + tableName + " (";
for (int i = 0; i < allHeads.Length; i++)
{
strCmd += allHeads[i];
if (i != allHeads.Length - 1)
{
strCmd += ",";
}
}
strCmd += ") VALUES ('";
for (int i = 0; i < allData.Length; i++)
{
DateTime timeValue;
if (allData[i].Contains("-") && DateTime.TryParse(allData[i], out timeValue))
{
strCmd += timeValue;
}
else
{
strCmd += allData[i];
}
if (i != allData.Length - 1)
{
strCmd += "','";
}
}
strCmd += "')";
sqlCommand = new SqlCommand(strCmd, sqlConnect);
sqlCommand.ExecuteNonQuery();
sqlCommand.Dispose();
return true;
}
catch (Exception ex)
{
Thread.Sleep(10);
continue;
}
}
}
else
{
return false;
}
}
return false;
}
//根据conditionName = conditionValue 条件，查询dateHead列的值
public bool ReadData(string tableName, string dateHead, string conditionName, string conditionValue, out DataSet dataInfo)
{
lock (sqlLock)
{
dataInfo = new DataSet();
try
{
if (isInited)
{
SqlCommand sqlCommand = new SqlCommand();
dataInfo.Clear();
string strCmd = "SELECT " + dateHead;
strCmd += " FROM " + tableName + " WHERE(" + conditionName + "='" + conditionValue + "')";
sqlCommand.CommandText = strCmd;
SqlDataAdapter sqlAdapter = new SqlDataAdapter(sqlCommand.CommandText, sqlConnect);
sqlAdapter.Fill(dataInfo);
sqlAdapter.Dispose();
}
else
{
return false;
}
}
catch (Exception ex)
{
return false;
}
}
return true;
}
public bool WriteData(string tableName, string[] allData,string conditionName, string conditionValue)
{
lock (sqlLock)
{
if (isInited)
{
SqlCommand sqlCommand = new SqlCommand();
for (int m = 0; m < 10; m++)
{
try
{
string strCmd = "UPDATE " + tableName + " SET ";
for (int i = 0; i < allData.Length; i++)
{
strCmd += allData[i];
if (i != allData.Length - 1)
{
strCmd += ",";
}
}
strCmd += " WHERE(" + conditionName + "='" + conditionValue + "')";
sqlCommand = new SqlCommand(strCmd, sqlConnect);
sqlCommand.ExecuteNonQuery();
sqlCommand.Dispose();
return true;
}
catch (Exception ex)
{
Thread.Sleep(10);
continue;
}
}
}
else
{
return false;
}
}
return false;
}
}
}