chore: storage readme

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# csharp-sdk # csharp-sdk
LeanCloud C# SDK
LeanCloud 数据存储,即时通讯 C# SDK基于 .Net Standard 2.0 标准开发。
## 安装
从 [Release](https://github.com/leancloud/csharp-sdk/releases) 下载指定版本 SDK暂不支持 Nuget 方式。
## 导入
```csharp
using LeanCloud;
// 数据存储
using LeanCloud.Storage;
// 即时通讯
using LeanCloud.Realtime;
```
## 初始化
```csharp
LCApplication.Initialize("ikGGdRE2YcVOemAaRbgp1xGJ-gzGzoHsz", "NUKmuRbdAhg1vrb2wexYo1jo", "https://ikggdre2.lc-cn-n1-shared.com");
```
## 调试
开启调试日志
```csharp
LCLogger.LogDelegate += (level, info) => {
switch (level) {
case LCLogLevel.Debug:
WriteLine($"[DEBUG] {DateTime.Now} {info}\n");
break;
case LCLogLevel.Warn:
WriteLine($"[WARNING] {DateTime.Now} {info}\n");
break;
case LCLogLevel.Error:
WriteLine($"[ERROR] {DateTime.Now} {info}\n");
break;
default:
WriteLine(info);
break;
}
}
```
## 用法
### 对象
```csharp
LCObject obj = new LCObject("Hello");
obj["intValue"] = 123;
await obj.Save();
```
### 查询
```csharp
LCQuery<LCObject> query = new LCQuery<LCObject>("Hello");
query.Limit(2);
List<LCObject> list = await query.Find();
```
### 文件
```csharp
LCFile file = new LCFile("avatar", AvatarFilePath);
await file.Save((count, total) => {
TestContext.WriteLine($"progress: {count}/{total}");
});
```
### 用户
```csharp
await LCUser.Login("hello", "world");
```
### GeoPoint
```csharp
LCGeoPoint p1 = new LCGeoPoint(20.0059, 110.3665);
```
[API 文档](https://leancloud.github.io/csharp-sdk/html/index.html) [API 文档](https://leancloud.github.io/csharp-sdk/html/index.html)