1、EF模板生成繼承DbContext的類文件重新建一個部分類文件

避免每次生成實體都會覆蓋掉。

2、重新構造調用數據庫連接字符串的函數

VS模板生成示例：

public Test_DBEntities()

: base("name=Test_DBEntities")

{

}? ??

重寫函數

public Test_DBEntities(string connectionString)

: base(connectionString)

{

}??

3、自定義EF數據庫字符串函數（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、調用示例

?string definestr = "";//自定義數據庫查詢結果

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

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