-1

我想根据从 wcf 服务中检索到的数据绑定我的 gridview。但它只显示 gridview 中的最后一行数据,而不是全部显示。

这是我的 WCF:

try
{
  DSCustomer dscat = new DSCustomer();
   //input is EmpUserID
   cmd.Parameters.AddWithValue("@myuser", id);
   cmd.CommandText = "mystoredproc";
   List<DSCustomer> lst = new List<DSCustomer>();
   SqlDataReader dr = cmd.ExecuteReader();

   while (dr.Read())
   {
      dscat.MyEmpID = Convert.ToInt32(dr["Emp"]);
      dscat.MyEmpName = dr["EmpName"].ToString();
      dscat.MyUnitName = dr["UnitName"].ToString();
      dscat.MyUnitNumber = Convert.ToInt32(dr["Unit"]);
      dscat.MyRole = dr["Role"].ToString();
      dscat.MySurveyStatus = dr["SurveyStatus"].ToString();

      //Add all the returns in to the list from back-end
      lst.Add(dscat);
   }

   //returns to the list
   return lst;
}

这是 DScustomer

public class DSCustomer
    {
        //Created properties based on the count of the data that we want to retrieve
        public int MyEmpID { get; set; }
        public string MyEmpName { get; set; }
        public string MyUnitName { get; set; }
        public int MyUnitNumber { get; set; }
        public string MyRole { get; set; }
        public string MySurveyStatus { get; set; }

    }

还有我的 default.aspx:

protected void Button1_Click(object sender, EventArgs e)
{
   MyServiceClient client = new MyServiceClient();
   Customer cust = new Customer();

   cust = client.getCategori(tbEmpID.Text);

   var list = new List<Customer> { cust };
   GridView1.DataSource=list;
   GridView1.DataBind();
}
4

2 回答 2

0

问题是我认为你调用不同的服务

Customer cust = new Customer();
cust = client.getCategori(tbEmpID.Text); // this method only return one customer 
var list = new List<Customer> { cust };
GridView1.DataSource=list;
GridView1.DataBind();

在您给定的服务中,您将返回 List,因此您可以直接将其绑定到 DataGrid

GridView1.DataSource=client.getCategori(tbEmpID.Text).AsEnumerable() ;
GridView1.DataBind();

还有一件事,在 while 循环中创建新DSCustomer的并将其添加到最后的列表中

   while (dr.Read())
   {
      DSCustomer cust = new DSCustomer();
      cust.MyEmpID = Convert.ToInt32(dr["Emp"]);
      cust.MyEmpName = dr["EmpName"].ToString();
      cust.MyUnitName = dr["UnitName"].ToString();
      cust.MyUnitNumber = Convert.ToInt32(dr["Unit"]);
      cust.MyRole = dr["Role"].ToString();
      cust.MySurveyStatus = dr["SurveyStatus"].ToString();
      lst.Add(cust);
   }
于 2013-05-16T19:32:20.297 回答
0

声明 dscat 变量的行:

DSCustomer dscat = new DSCustomer();

应该移到 while 循环内。虽然您可能要向 lst 添加 N 个元素,但 lst 中的每个 DSCustomer 项将具有与添加到 lst 列表中的最后一项相同的值。

另请注意,您对 WCF 服务的调用:

Customer cust = new Customer();
cust = client.getCategori(tbEmpID.Text);

表明您只会得到 1 个客户对象(不是很多),然后您从该对象创建一个包含 1 个项目的列表:

var list = new List<Customer> { cust }; // list only has 1 item.

因此,您为 WCF 服务显示的代码似乎与您在客户端上调用的方法不同。

于 2013-05-16T21:30:29.250 回答