这个是sharepoint中利用用户的id来拼接query语句进行查询，出入参数为一个string的数组，
可以用下面方法对数组中为空和重复的数据排除；
/// 排除数组中重复项和空项
/// </summary>
/// <param name="values"></param>
/// <returns></returns>
private static string[] getString(string[] values)
{
List<string> list = new List<string>();
for (int i = 0; i < values.Length; i++)
{
if (list.IndexOf(values[i].ToLower()) == -1 && values[i] != "")
{
list.Add(values[i]);
}
}
return list.ToArray();
}
/// <summary>
/// 根据收藏的id拼接query查询语句
/// </summary>
/// <param name="sharedocument"></param>
/// <returns></returns>
private static string getQuery(string[] sharedocument)
{
//当为1个的时候
string query = "";
if (sharedocument.Length == 1)
{
for (int i = 0; i < sharedocument.Length; i++)
{
query += "<Eq><FieldRef Name='Author' LookupId='TRUE' /><Value Type='User'>" + sharedocument[i] + "</Value></Eq>";
}
}
//两个的时候
else if (sharedocument.Length == 2)
{
string newmessage = "";
for (int i = 0; i < sharedocument.Length; i++)
{
newmessage += "<Eq><FieldRef Name='Author' LookupId='TRUE' /><Value Type='User'>" + sharedocument[i] + "</Value></Eq>"; }
query = "<Or>" + newmessage + "</Or>";
}
//大于两个的时候
else if (sharedocument.Length > 2)
{
//前两个id的链接
string query2 = "";
string newmessage2 = "";
for (int i = 0; i < 2; i++)
{
newmessage2 += "<Eq><FieldRef Name='Author' LookupId='TRUE' /><Value Type='User'>" + sharedocument[i] + "</Value></Eq>"; }
query2 = "<Or>" + newmessage2 + "</Or>";
string query3 = "";
string newmessage3 = "";
for (int j = 2; j < sharedocument.Length; j++)
{
query3 += "<Or>";
newmessage3 += "<Eq><FieldRef Name='Author' LookupId='TRUE' /><Value Type='User'>" + sharedocument[j] + "</Value></Eq></Or>";
}
query = query3 + query2 + newmessage3;
}
return query;
}
