C# 在Sharepoint 2013中使用c选中多个复选框

我有个问题！：我使用C语言为Visual Studio 2012编程，正在构建一个使用Sharepoint 2013数据的内部网。我的登记册有问题

在SharePoint 2013中，我有一个列表。在该列表中，其中一列的类型为choice。当我从C调用保存信息时，显然是保存了。但是，在Sharepoint 2013中看到结果后，我看到的结果并非如此，因此信息不会保存

在SharePoint 2013中，仅在第一个元素中保存默认复选框元素，但不保存正确的选择

我的代码：

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有什么想法吗？

我已经解决了这个问题。上下文是错误的

SharePointConnector.SharePointEntities.TestDeInteresItem test = new SharePointConnector.SharePointEntities.TestDeInteresItem();

List<SharePointConnector.SharePointEntities.TestDeInteresInteresesPersonalesValue> personalList = new List<SharePointConnector.SharePointEntities.TestDeInteresInteresesPersonalesValue>();//0

test.AlumnoId = student.Identificador;
string[] auxPersonal = possibleInterest.Personal.Split(',');
for (int i = 0; i < auxPersonal.Length; i++)
{
        string s = auxPersonal[i];
        if (s.Length > 0)
        {
               var allInterest = englishDataContext.TestDeInteresInteresesPersonales.ToList();
               var element = allInterest.Where(x => x.Value.Equals(s)).FirstOrDefault();
               if (element != null)
               {
                            SharePointConnector.SharePointEntities.TestDeInteresInteresesPersonalesValue personal = new SharePointConnector.SharePointEntities.TestDeInteresInteresesPersonalesValue();
                            personal.Value = element.Value;
                            test.InteresesPersonales.Add(personal); //1
               }
        }
}

englishDataContext.AddToTestDeInteres(test); //2
englishDataContext.SaveChanges(); //3

--- //0 -> Initially, the list of elements (column when to type is election) is empty.

//1 -> The element is added successfully

//2 -> In this step, the information to added is correctly...

//3 -> ...but save allinformation correctly less the item cited (column when to type is election). This element is save default election (First element to checkbox)