如何用C#寫(xiě)的ASP.NET數(shù)據(jù)庫(kù)操作類

如何用C#寫(xiě)的ASP.NET數(shù)據(jù)庫(kù)操作類，相信很多沒(méi)有經(jīng)驗(yàn)的人對(duì)此束手無(wú)策，為此本文總結(jié)了問(wèn)題出現(xiàn)的原因和解決方法，通過(guò)這篇文章希望你能解決這個(gè)問(wèn)題。

下面是用C#寫(xiě)的ASP.NET數(shù)據(jù)庫(kù)操作類：

using System;  using System.Data;  using System.Configuration;  using System.Web;  using System.Web.Security;  using System.Web.UI;  using System.Web.UI.WebControls;  using System.Web.UI.WebControls.WebParts;  using System.Web.UI.HtmlControls;  using System.Data.SqlClient;  namespace Mysqlserver  {      /// < summary>      /// SqlServerDataBase 的摘要說(shuō)明      /// < /summary>      public class SqlServerDataBase      {          private string strError = null;          private int intCount = 0;          public SqlServerDataBase()          {              //              // TODO: 在此處添加構(gòu)造函數(shù)邏輯              //          }          /// < summary>          /// 公開(kāi)方法DBConn，返回?cái)?shù)據(jù)庫(kù)連接          /// < /summary>          /// < returns>< /returns>          public SqlConnection DBconn()          {              string strConn = "Server=(local);Database=GlobalMeetings;Uid=sa;pwd=";              try             {                  return new SqlConnection(strConn);              }              catch (Exception)               {                  return null;              }          }          /// < summary>          /// 公開(kāi)屬性ErrorMessage，返回錯(cuò)誤信息          /// < /summary>          public string ErrorMessage          {              get             {                  return strError;              }          }           /// < summary>          /// 根據(jù)查詢語(yǔ)句從數(shù)據(jù)庫(kù)檢索數(shù)據(jù)          /// < /summary>          /// < param name="strSelect">查詢語(yǔ)句< /param>            /// < param name="SqlConn">數(shù)據(jù)庫(kù)連接< /param>          /// < returns>有數(shù)據(jù)則返回DataSet對(duì)象，否則返回null< /returns>          public DataSet Select(string SelectString, SqlConnection sqlConn)          {              strError = "";              SqlConnection conn;              if (sqlConn == null)              {                   conn = DBconn();              }              else             {                  conn = sqlConn;              }              try             {                  //若數(shù)據(jù)庫(kù)連接的當(dāng)前狀態(tài)是關(guān)閉的，則打開(kāi)連接                  if (conn.State == ConnectionState.Closed)                  {                      conn.Open();                  }                  SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();                  SqlCommand selectCommand = new SqlCommand(SelectString, conn);                  selectCommand.CommandType = CommandType.Text;                  mySqlDataAdapter.SelectCommand = selectCommand;                  DataSet myDS = new DataSet();                  mySqlDataAdapter.Fill(myDS);                   return myDS;              }              catch (Exception e)              {                  strError = "數(shù)據(jù)檢索失?。?quot; + e.Message;                  return null;              }               finally             {                  if (conn.State != ConnectionState.Closed)                  {                      conn.Close();                  }              }          }          /// < summary>          /// 更新數(shù)據(jù)庫(kù)          /// < /summary>          /// < param name="UpdateString">Update Sql語(yǔ)句< /param>          /// < param name="SqlConn">數(shù)據(jù)庫(kù)連接< /param>          /// < returns>更新成功返回true< /returns>          public bool Update(string UpdateString, SqlConnection SqlConn)           {              return udiDataBase(UpdateString, SqlConn);          }          /// < summary>          /// 從數(shù)據(jù)庫(kù)中刪除數(shù)據(jù)          /// < /summary>          /// < param name="DeleteString">Delete Sql語(yǔ)句< /param>          /// < param name="SqlConn">數(shù)據(jù)庫(kù)連接< /param>          /// < returns>刪除成功返回true< /returns>          public bool Delete(string DeleteString, SqlConnection SqlConn)          {              return udiDataBase(DeleteString, SqlConn);          }          /// < summary>          /// 把數(shù)據(jù)插入數(shù)據(jù)庫(kù)          /// < /summary>          /// < param name="InsertString">Insert Sql語(yǔ)句< /param>          /// < param name="SqlConn">數(shù)據(jù)庫(kù)連接< /param>          /// < returns>插入成功返回true< /returns>          public bool Insert(string InsertString, SqlConnection SqlConn)          {              return udiDataBase(InsertString, SqlConn);          }          /// < summary>          /// 根據(jù)Sql語(yǔ)句更新數(shù)據(jù)庫(kù)          /// < /summary>           /// < param name="UDIString">更新語(yǔ)句< /param>          /// < param name="SqlConn">數(shù)據(jù)庫(kù)連接< /param>          /// < returns>更新成功則返回true< /returns>          public bool udiDataBase(string UDIString, SqlConnection SqlConn)          {              strError = "";              SqlConnection conn;              if (SqlConn == null)              {                  conn = DBconn();              }              else             {                  conn = SqlConn;              }              try             {                  if (conn.State == ConnectionState.Closed)                  {                      conn.Open();                  }                  SqlCommand cmd = new SqlCommand(UDIString, conn);                   cmd.CommandType = CommandType.Text;                  intCount = cmd.ExecuteNonQuery();                  return !(intCount <  1);              }              catch (Exception e)              {                  strError = "更新數(shù)據(jù)庫(kù)失?。?quot; + e.Message;                  return false;              }              finally             {                  if (conn.State != ConnectionState.Closed)                  {                      conn.Close();                  }              }          }      }  }

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ASP.NET數(shù)據(jù)庫(kù)操作類寫(xiě)好了，下面是兩種調(diào)用方法

1、

string strUserPsw = UserPsw.Text.Trim();  string UserPassWord = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(strUserPsw, "MD5");//md5加密   SqlServerDataBase obj = new SqlServerDataBase();  obj.Insert("insert into asUserInfo (UserName,UserPassword,Question,Answer,CreateTime) values('" + UserName.Text.Trim() + "','" + UserPassword + "','" + Question.Text.Trim() + "','" + Answer.Text.Trim() + "','" + DateTime.Now.ToString() + "' )", null);

2、

private bool IsUsernameExist(string strUsername)  {      bool bRet = true;      SqlServerDataBase db = new SqlServerDataBase();       DataSet ds = db.Select("select * from asUserInfo where UserName = '" + strUsername + "'", null);      if (ds == null ds.Tables.Count == 0 ds.Tables[0].Rows.Count == 0)      {          bRet = false;      }      else     {          bRet = true;      }       return bRet;  }

以上就介紹了用C#寫(xiě)的ASP.NET數(shù)據(jù)庫(kù)類及調(diào)用方法。

看完上述內(nèi)容，你們掌握如何用C#寫(xiě)的ASP.NET數(shù)據(jù)庫(kù)操作類的方法了嗎？如果還想學(xué)到更多技能或想了解更多相關(guān)內(nèi)容，歡迎關(guān)注億速云行業(yè)資訊頻道，感謝各位的閱讀！