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ReadMe.md

@@ -20,3 +20,26 @@
 ### 查询:
 ![Clip_20240428_161438.png](ReadMe%2FClip_20240428_161438.png)
 #### WebApi:`localhost:5242/api/query?key={handle}`
+
+### 删除:
+```csharp
+[HttpGet]
+	[Route("delete")]
+	public async Task<bool> Delete (string handle)
+	{
+		await _service.DeleteAsync(handle);
+		return true;
+	}
+```
+#### WebApi:`localhost:5242/api/delete?handle={handle}`
+
+### 检查标识码是否存在
+```csharp
+[HttpGet]
+	[Route("isExist")]
+	public async Task<bool> IsExist(string key)
+	{
+		return await _service.IsExistAsync(key);
+	}
+```
+#### WebApi:`localhost:5242/api/isExist?key={key}`