在使用开源项目 SENPARC.WEIXIN SDK 调用微信支付接口的时候出现了WeixinPayInfoCollection尚未注册Mch，这个问题。
最后地解决方案是：
我这个傻逼忘了在全局Global初始化TenPayV3InfoCollection
只要在Global 添加以下代码
//提供微信支付信息
var tenPayV3_MchId = System.Configuration.ConfigurationManager.AppSettings["TenPayV3_MchId"];
var tenPayV3_Key = System.Configuration.ConfigurationManager.AppSettings["TenPayV3_Key"];
var tenPayV3_AppId = System.Configuration.ConfigurationManager.AppSettings["TenPayV3_AppId"];
var tenPayV3_AppSecret = System.Configuration.ConfigurationManager.AppSettings["TenPayV3_AppSecret"];
var tenPayV3_TenpayNotify = System.Configuration.ConfigurationManager.AppSettings["TenPayV3_TenpayNotify"];
var tenPayV3Info = new TenPayV3Info(tenPayV3_AppId, tenPayV3_AppSecret, tenPayV3_MchId, tenPayV3_Key,
tenPayV3_TenpayNotify);
TenPayV3InfoCollection.Register(tenPayV3Info);
代码示例：
private static TenPayV3Info _tenPayV3Info;
/// <summary>
/// v3 微信 支付模式属性
/// </summary>
public static TenPayV3Info TenPayV3Info
{
get
{
if (_tenPayV3Info == null)
{
_tenPayV3Info =TenPayV3InfoCollection.Data[System.Configuration.ConfigurationManager.AppSettings["TenPayV3_MchId"]];
}
return _tenPayV3Info;
}
} protected void Application_Start(object sender, EventArgs e)
{
RegisterWeixinPay();
} //提供微信支付信息
var tenPayV3_MchId = System.Configuration.ConfigurationManager.AppSettings["TenPayV3_MchId"];
var tenPayV3_Key = System.Configuration.ConfigurationManager.AppSettings["TenPayV3_Key"];
var tenPayV3_AppId = System.Configuration.ConfigurationManager.AppSettings["TenPayV3_AppId"];
var tenPayV3_AppSecret = System.Configuration.ConfigurationManager.AppSettings["TenPayV3_AppSecret"];
var tenPayV3_TenpayNotify = System.Configuration.ConfigurationManager.AppSettings["TenPayV3_TenpayNotify"]; var tenPayV3Info = new TenPayV3Info(tenPayV3_AppId, tenPayV3_AppSecret, tenPayV3_MchId, tenPayV3_Key,tenPayV3_TenpayNotify);
TenPayV3InfoCollection.Register(tenPayV3Info);
webconfig 配置
<!-- 微信支付V3 -->
<add key="TenPayV3_MchId" value="TenPayV3_MchId"/>
<add key="TenPayV3_Key" value="TenPayV3_Key"/>
<add key="TenPayV3_AppId" value="TenPayV3_AppId"/>
<add key="TenPayV3_AppSecret" value="TenPayV3_AppSecret"/>
<add key="TenPayV3_TenpayNotify" value="TenPayV3_TenpayNotify"/>