![IDataSource]( "IDataSource")
本文介绍了数据源是无效的类型。它必须是IListSource，IEnumerable或IDataSource的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
数据源是无效的类型。它必须是IListSource，IEnumerable或IDataSource。当我绑定网格视图时显示错误 var list = dal.GetEmployeebyName（name）;
GridViewEmployee.DataSource = list;
GridViewEmployee.DataBind（）;
我有查询
public EmployeeInfo GetEmployeebyName（String name）
{
using（var context = new HRMSEntities（））
{
return context.EmployeeInfo.FirstOrDefault（e => e.FName == name）;
$ div $解析方案
你从GetEmployeebyName方法返回一个对象，并将其绑定到GridViewEmployee，这就是为什么它给出了错误。
您可以将其更改为像
var empInfo = dal.GetEmployeebyName（name）;
var list = new List< EmployeeInfo> {empInfo};
//或者你可以这样做
// var list = new List< EmployeeInfo>（）;
//list.Add(empInfo）;
GridViewEmployee.DataSource = list;
GridViewEmployee.DataBind（）;
DataSource必须是一种集合，因为异常说明了它必须是IListSource，IEnumerable ，或IDataSource）
Data source is an invalid type. It must be either an IListSource, IEnumerable, or IDataSource. The error is displayed when I bind the grid view
var list = dal.GetEmployeebyName(name);
GridViewEmployee.DataSource = list;
GridViewEmployee.DataBind();
i have the query
public EmployeeInfo GetEmployeebyName(String name)
{
using (var context = new HRMSEntities())
{
return context.EmployeeInfo.FirstOrDefault(e => e.FName == name);
}
}
解决方案
You are returning a single object from GetEmployeebyName method and binding that to the GridViewEmployee, thats why it is giving error.
You can change it like
var empInfo = dal.GetEmployeebyName(name);
var list = new List<EmployeeInfo>{empInfo};
//or you can do this
//var list = new List<EmployeeInfo>();
//list.Add(empInfo);
GridViewEmployee.DataSource = list;
GridViewEmployee.DataBind();
DataSource must be a type of collection as the exception is stating ( It must be either an IListSource, IEnumerable, or IDataSource)
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