摘要：
1、 使用Microsoft.SharePoint；更新；SPWebsite=SPControl.GetContextWeb（上下文）；SPListItemCollectionments=site.Lists[“ListName”].Items；SPListItemitem=items.Add（）；item[“Field_1”]=OneValue；项目[“Field_2”]=TwoV
一、更新
using Microsoft.SharePoint; SPWeb site = SPControl.GetContextWeb（Context）; SPListItemCollection items = site.Lists["ListName"].Items; SPListItem item = items.Add（）; item["Field_1"] = OneValue; item["Field_2"] = TwoValue; item.Update（）;
二、删除
using Microsoft.SharePoint; SPWeb site = SPControl.GetContextWeb（Context）; SPListItemCollection items = site.Lists["ListName"].Items; items[0].Delete（）;
三、上传文件到sharepoint
using System.IO; using Microsoft.SharePoint; if（htmlInputFile1.PostedFile != null ） { SPWeb site = new SPSite（destinationURL）.OpenWeb（）; Stream stream = htmlInputFile1.PostedFile.InputStream; byte[] buffer = new bytes[stream.Length]; stream.Read（buffer， 0，（int） stream.Length）; stream.Close（）; site.Files.Add（destinationURL， buffer）; }
四、查询数据
using Microsoft.SharePoint; SPWeb web = new SPSite（"http://nick"）.OpenWeb（"test"）; //Open website web.AllowUnsafeUpdates = true; SPList list = web.Lists["ListName"]; SPQuery query = new SPQuery（）; query.Query = "<Where>"+ "<And><And>"+ "<Eq><FieldRef Name=\"Filed_1\"/><Value Type=\"Text\">Test</Value></Eq>" + "<Eq><FieldRef Name=\"Filed_2\"/><Value Type=\"Text\">" + （string）OneValue + "</Value></Eq>" + "</And>"+ "<Eq><FieldRef Name=\"Filed_3\"/><Value Type=\"Text\">" + （string）TwoValue + "</Value></Eq>" + "</And>"+ "</Where>"; query.RowLimit = 10;//查询 SPListItemCollection items = list.GetItems（query）; try { if （Items.Count != 0） { //更新sharepoint list 数据 foreach （SPListItem list in listItems） { list["Filed_1"] = TextBox1.text.ToString（）; list["Filed_2"] = TextBox2.text.ToString（）; list["Filed_3"] = TextBox3.text.ToString（）; listItem.Update（）; } } else { //将数据记录添加进sharepoint SPListItem addlist = List.Items.Add（）; addlist["Filed_1"] = TextBox1.Text.ToString（）; addlist["Filed_2"] = TextBox2.Text.ToString（）; addlist["Filed_3"] = TextBox3.Text.ToString（）; addlist.Update（）; } } catch { ... }