foreach语句无法对"getenumerator"的公共定义类型的变量进行操作 [英] foreach statement cannot operate on variables of type public definition for 'getenumerator'
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问题描述
Task03Entities.Entites entities = new Task03Entities.Entites();
// Creat a object for my entites class
Task03BAL.BAL bal = new Task03BAL.BAL();
// creat a object of BAL to call Get Data Method
List<Task03Entities.Entites> entitiesList = new List<Task03Entities.Entites>();
// make a list of class Entities
entitiesList = bal.GetData(entities);
// store data in list
ViewState.Add("Products", entitiesList.ToArray());
// use view state to store entitieslist
Task03Entities.Entites[] entitiesArray =(Task03Entities.Entites[])ViewState["Products"];
List<Task03Entities.Entites> ViewStateList =new List<Task03Entities.Entites(entitiesArray);
// so now ViewStateList contain entitieslist data
// Now the Problem which i am facing is
if (Request.QueryString["count"] != null) // this is okay
{
listCount =Convert.ToInt32(Request.QueryString["count"]);
}
for (int i = (listCount * 2)-2; i < listCount * 2; i++)
{
Task03Entities.Entites newViewStateList = new Task03Entities.Entites();
newViewStateList = ViewStateList[i];
// view state contain a list of data here on above line m trying to acess single data
%>
<table>
<%
foreach (Task03Entities.Entites item in newViewStateList)
// on above line i am getting following error message
编译器错误消息:CS1579:foreach语句无法在'Task03Entities.Entites'类型的变量,因为'Task03Entities.Entites'不包含以下内容的公共定义'GetEnumerator'
Compiler Error Message: CS1579: foreach statement cannot operate on variables of type 'Task03Entities.Entites' because 'Task03Entities.Entites' does not contain a public definition for 'GetEnumerator'
推荐答案
很简单: Task03Entities.Entites
不是集合.
您在此处初始化对象:
Task03Entities.Entites newViewStateList = new Task03Entities.Entites();
然后尝试对其进行迭代,就好像它是一个集合一样:
And then attempt to iterate over it as if it were a collection:
foreach (Task03Entities.Entites item in newViewStateList)
{
}
我怀疑您想要类似的东西
I suspect you want something like:
List<Task03Entities.Entites> newViewStateList = new List<Task03Entities.Entites>();
foreach (Task03Entities.Entites item in newViewStateList)
{
//code...
}
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