C# CS1525:MVC2中的无效表达式项“：”错误

像这样试试

public ActionResult About()
{ 
  Gramin_Live_18032015Entities objdatabase = new Gramin_Live_18032015Entities(); 
  var Datatable = (from Tbl_StateMaster in objdatabase.Tbl_StateMaster select Tbl_StateMaster).ToList();     
  ViewData["AllState"] = Datatable; 
  return View(); 
}

我认为您正在将列表传递给viewdata，并尝试将其用作字符串。尝试使用foreach并尝试。请检查链接

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只需在ViewData.public ActionResult之前使用@delimeter即可{Gramin_Live_18032015Entities objdatabase=new Gramin_Live_18032015Entities；var Datatable=from Tbl_StateMaster in objdatabase.Tbl_StateMaster选择Tbl_StateMaster.ToList；ViewData[AllState]=Datatable；返回视图；}在视图上将内容放在此处

使用delimeter后，您需要编辑您的问题，并在提供代码时使用代码格式，而不是将其发布在评论中。请同时阅读.after-use-that-have-problem-System.Collections.Generic.List`1[FirstApplication.Tbl_StateMaster]

public ActionResult About()
{ 
  Gramin_Live_18032015Entities objdatabase = new Gramin_Live_18032015Entities(); 
  var Datatable = (from Tbl_StateMaster in objdatabase.Tbl_StateMaster select Tbl_StateMaster).ToList();     
  ViewData["AllState"] = Datatable; 
  return View(); 
}

<%= ViewData["AllState"].ToString()%>