我不想在 JSON 中返回整个表格。我只想要以下列:ProjectContactFirstName
、ProjectContactLastName
但我尝试的任何操作都不起作用。这是我的代码:
[WebMethod]
public static string getProjectByID(int id)
{
using (dbPSREntities4 myEntities = new dbPSREntities4())
{
var thisProject = myEntities.tbProjects.Where(x => x.ProjectID == id).ToList();
JavaScriptSerializer serializer = new JavaScriptSerializer();
var json = serializer.Serialize(thisProject);
return json; <--- here I need to say what columns to return but nothing will work. Thanks!
}
}
最佳答案
在将对象传递给序列化程序之前,您必须过滤列:
[WebMethod]
public static string getProjectByID(int id)
{
using (dbPSREntities4 myEntities = new dbPSREntities4())
{
var thisProject = myEntities.tbProjects.Where(x => x.ProjectID == id);
var columns = thisProject.Select(x => new { x.ProjectContactFirstName, x.ProjectContactLastName }).ToList();
JavaScriptSerializer serializer = new JavaScriptSerializer();
var json = serializer.Serialize(columns);
return json;
}
}
关于c# - 在 LINQ 中仅将某些列返回到 JSON,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/21170720/