1、EF模板生成繼承DbContext的類文件重新建一個(gè)部分類文件

避免每次生成實(shí)體都會(huì)覆蓋掉。

2、重新構(gòu)造調(diào)用數(shù)據(jù)庫(kù)連接字符串的函數(shù)

VS模板生成示例：

public Test_DBEntities()

: base("name=Test_DBEntities")

{

}? ??

重寫函數(shù)

public Test_DBEntities(string connectionString)

: base(connectionString)

{

}??

3、自定義EF數(shù)據(jù)庫(kù)字符串函數(shù)（SQLServer）?

public static string GetConnection()

{

string DataSource = ".";

string DataBase = "DB;

string UserId = "sa";

string PassWord = "sa";

SqlConnectionStringBuilder sqlBuilder = new SqlConnectionStringBuilder();

sqlBuilder.DataSource = DataSource;

sqlBuilder.InitialCatalog = DataBase;

sqlBuilder.PersistSecurityInfo = true;

sqlBuilder.IntegratedSecurity = true;

sqlBuilder.MultipleActiveResultSets = true;

sqlBuilder.UserID = UserId;

sqlBuilder.Password = PassWord;

EntityConnectionStringBuilder entityBuilder = new EntityConnectionStringBuilder();

entityBuilder.ProviderConnectionString = sqlBuilder.ToString();

entityBuilder.Metadata = "res://*/";

entityBuilder.Provider = "System.Data.SqlClient";

return entityBuilder.ToString();

}??

4、調(diào)用示例

?string definestr = "";//自定義數(shù)據(jù)庫(kù)查詢結(jié)果

string str = "";

using (var db = new Test_DBEntities())

{

var list = db.T_User.Select(m=>m.name).ToList();

str= string.Join(",", list);

}

using (var db = new Test_DBEntities(ConnectionHelper.GetConnection()))

{

var list = db.T_User.Select(m => m.name).ToList();

definestr = string.Join(",", list);

}? ??

總結(jié)

以上是生活随笔為你收集整理的EF 实现自定义数据库字符串的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

如果覺(jué)得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。