我有一个.net网络应用程序，它使用会员资格进行用户验证。成员资格在web.config文件中有一个定义，并引用文件中的连接字符串（web.config），我需要在web.config中动态地设置代码的成员关系的连接字符串不是静态的。
我该怎么做？
提前致谢。
答案 0 :(得分：5)
以下C＃示例代码演示了如何configure a .NET membership provider programmatically Jacques L. Chereau。此代码还要求您configure a connection string命名为MyDatabase
NameValueCollection objConfig = new NameValueCollection();
objConfig.Add("connectionStringName", "MyDatabase");
objConfig.Add("enablePasswordRetrieval", "false");
objConfig.Add("enablePasswordReset", "true");
objConfig.Add("requiresQuestionAndAnswer", "true");
objConfig.Add("applicationName", "MyApp");
objConfig.Add("requiresUniqueEmail", "true");
objConfig.Add("maxInvalidPasswordAttempts", "5");
objConfig.Add("passwordAttemptWindow", "10");
objConfig.Add("commandTimeout", "30");
objConfig.Add("passwordFormat", "Hashed");
objConfig.Add("name", "AspNetSqlMembershipProvider");
objConfig.Add("minRequiredPasswordLength", "8");
objConfig.Add("minRequiredNonalphanumericCharacters", "2");
objConfig.Add("passwordStrengthRegularExpression", "(?=^.{8,25}$)(?=.*\\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[!@#$%^&*()_+}{\\":;'?/>.<,])(?!.*\\s).*$"));
SqlMembershipProvider objSqlMembershipProvider = new SqlMembershipProvider();
objSqlMembershipProvider.Initialize(objConfig["name"], objConfig);
MembershipProviderCollection colMembershipProviders = new MembershipProviderCollection();
colMembershipProviders.Add(objSqlMembershipProvider);
colMembershipProviders.SetReadOnly();
BindingFlags enuBindingFlags = BindingFlags.NonPublic | BindingFlags.Static;
Type objMembershipType = typeof(Membership);
objMembershipType.GetField("s_Initialized", enuBindingFlags).SetValue(null, true);
objMembershipType.GetField("s_InitializeException", enuBindingFlags).SetValue(null, null);
objMembershipType.GetField("s_HashAlgorithmType", enuBindingFlags).SetValue(null, "SHA1");
objMembershipType.GetField("s_HashAlgorithmFromConfig", enuBindingFlags).SetValue(null, false);
objMembershipType.GetField("s_UserIsOnlineTimeWindow", enuBindingFlags).SetValue(null, 15);
objMembershipType.GetField("s_Provider", enuBindingFlags).SetValue(null, objSqlMembershipProvider);
objMembershipType.GetField("s_Providers", enuBindingFlags).SetValue(null, colMembershipProviders);
假设您有以下库引用：
using System.Web.Security;
using System.Collections.Specialized;
using System.Reflection;
修改
此方法在请求的生命周期
中尽早设置成员资格提供程序中的连接字符串private void SetMembershipProviderConnectionString(string connectionString)
{
// Set private property of Membership. Untested code!!
var connectionStringField = Membership.Provider.GetType().GetField("_sqlConnectionString", BindingFlags.Instance | BindingFlags.NonPublic);
if (connectionStringField != null)
connectionStringField.SetValue(Membership.Provider, connectionString);
}
未经测试但是从Application_PreRequestHandlerExecute内的Global.asax.cs调用此方法可以完成这项工作。
答案 1 :(得分：2)
有一个更简单的解决方案。