设置 EmailSettingNames.Smtp.EnableSsl 会导致“字符串未被识别为有效的布尔值”错误答案

【问题标题】：setting EmailSettingNames.Smtp.EnableSsl results in a "String was not recognized as a valid Boolean" error设置 EmailSettingNames.Smtp.EnableSsl 会导致“字符串未被识别为有效的布尔值”错误
【发布时间】：2019-10-27 01:33:09
【问题描述】：

我已经设置了 aspnet 样板来发送电子邮件。我使用以下设置了默认值：

    public class AppSettingProvider : SettingProvider
{
    public override IEnumerable<SettingDefinition> GetSettingDefinitions(SettingDefinitionProviderContext context)
    {
        return new[]
        {
            new SettingDefinition(EmailSettingNames.DefaultFromAddress, "", scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.DefaultFromDisplayName, "", scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.Host, "127.0.0.1", scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.Port, "25", scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.UserName, XXXXX, scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.Password, XXXXX, scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.Domain, string.Empty, scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.EnableSsl, "true", scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.UseDefaultCredentials, string.Empty, scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true)
        };
    }
}

但是当我发送电子邮件时，它会生成“字符串未被识别为有效的布尔值”异常，我该如何定义 EmailSettingNames.Smtp.EnableSsl 属性以使其正确应用？

【问题讨论】：

你能分享异常的堆栈跟踪吗？
调用_emailSender.Send时出现异常，栈跟踪如下：dropbox.com/s/6yion3er0fd5xkp/stacktrace.txt?dl=0

标签： asp.net-core aspnetboilerplate

【解决方案1】：

以下是正确的：

public class AppSettingProvider : SettingProvider
{
    public override IEnumerable<SettingDefinition> GetSettingDefinitions(SettingDefinitionProviderContext context)
    {
        return new[]
        {
            new SettingDefinition(EmailSettingNames.DefaultFromAddress, "", scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.DefaultFromDisplayName, "", scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.Host, "127.0.0.1", scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.Port, "25", scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.UserName, XXXXX, scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.Password, XXXXX, scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.Domain, string.Empty, scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.EnableSsl, "true", scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true),
            new SettingDefinition(EmailSettingNames.Smtp.UseDefaultCredentials, "false", scopes: SettingScopes.Application | SettingScopes.Tenant | SettingScopes.User, isVisibleToClients: true, isInherited: true)
        };
    }
}

更正：UseDefaultCredentials 不能为空字符串。

【讨论】：