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What would you like to do?
Example: update List Item
using (var client = new SPHttpClient(webUri, userName, password))
var listTitle = "Tasks";
var itemId = 1;
var itemPayload = new { __metadata = new { type = "SP.Data.TasksListItem" }, Title = "Approval Task"};
var endpointUrl = string.Format("{0}/_api/web/lists/getbytitle('{1}')/items({2})",webUri,listTitle,itemId);
var headers = new Dictionary<string,string>();
headers["IF-MATCH"] = "*";
headers["X-HTTP-Method"] = "MERGE";
client.ExecuteJson(endpointUrl,HttpMethod.Post,headers, itemPayload);
Console.WriteLine("Task item has been updated");
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