Updated 常见问题 (markdown)

常见问题.md

@@ -68,7 +68,7 @@ fsql.Select<T>().WithSql(sql).Page(1, 10).ToList();
 
 - a) 不要构建了 IFreeSql 再丢去注册
 
-```c#
+```csharp
 var fsql = new FreeSqlBulder()...Build();
 ib.Register("key01", () => fsql); //错了，错了，错了
 
@@ -79,7 +79,7 @@ ib.Register("key01", () => new FreeSqlBulder()...Build()); //正确
 
 原因三：检查项目的系统事件，是否在异常之前触发
 
-```c#
+```csharp
 AppDomain.CurrentDomain.ProcessExit += (s1, e1) =>
 {
   //记录日志
@@ -123,14 +123,14 @@ GetAsync await 为异步方法获取连接的排队数量
 
 1.添加包
 
-```
+```xml
 <PackageReference Include="FreeSql.Provider.Sqlite" Version="3.0.100" />
 <PackageReference Include = "Microsoft.Data.Sqlite" Version="6.0.3" />
 ```
 
 2.代码
 
-```
+```csharp
 Microsoft.Data.Sqlite.SqliteConnection _database = new Microsoft.Data.Sqlite.SqliteConnection($"Data Source=document.db");
 
 var fsql = new FreeSql.FreeSqlBuilder()
@@ -143,7 +143,7 @@ var fsql = new FreeSql.FreeSqlBuilder()
 
 [UWP](https://github.com/densen2014/FreeSqlDemos/tree/master/UWP1)
 
-```
+```csharp
 using System.Data.SQLite;
 
 string dbpath = Path.Combine(ApplicationData.Current.LocalFolder.Path, "sqliteSample.db");
@@ -155,7 +155,7 @@ var fsql = new FreeSql.FreeSqlBuilder()
 
 [Xamarin Forms,代码较多](https://github.com/densen2014/FreeSqlDemos/tree/master/xamarinFormApps)
 主程序,接口获取rovider,各个平台自己实现.
-```
+```csharp
 if (Device.RuntimePlatform == Device.iOS || Device.RuntimePlatform == Device.Android)
 {
    fsql = new FreeSql.FreeSqlBuilder()