我有两个问题：第一个是为什么我得到＆＃34;无法找到类型或命名空间＆＃34; - 参考行中的PostM
public PostM myPost = new PostM（）;
。第二个问题是，为什么，在下一行，我得到＆＃34;名称BlogID在当前上下文中不存在＆＃34;
myPost.displayPosts（BlogID）;
namespace Assessment_2
{
public partial class Addpost2 : System.Web.UI.Page
{
**public PostM myPost = new PostM()**;
string BlogID;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
txtBlogDate.Text = GridView1.SelectedRow.Cells[3].Text;
txtBlogTitle.Text = GridView1.SelectedRow.Cells[2].Text;
BlogID = GridView1.SelectedRow.Cells[1].Text;
}
protected void btnSavePost_Click(object sender, EventArgs e)
{
string currentUserId = Context.User.Identity.GetUserId();
string comment = txtComments.Text;
string BlogID = GridView1.SelectedRow.Cells[1].Text;
myPost.addPost(currentUserId, comment, BlogID, Label2);
}
protected void Button1_Click(object sender, EventArgs e)
{
**myPost.displayPosts(BlogID);**
}
}
}
PostM.cs包含：
namespace Assessment_2
{
public class PostM
{
private string title;
private string description;
private DateTime date;
private SqlDataSource datasource;
// Class Constructor - creates the object instance. Invoked by "PostM myblog = new PostM()" - see .cs file
public PostM()
{
this.title = "";
this.description = "";
this.date = new DateTime();
datasource = new SqlDataSource();
}
// Procedural methods
..........etc
感谢。这是displayPosts方法：
public string displayPosts(string BlogID)
{
this.datasource.SelectCommand = "SELECT * FROM dbo.Post WHERE ";
var result = this.datasource.Select(DataSourceSelectArguments.Empty);
DataView reader = (DataView)result; // Cast result to DataView
string posts = "";
foreach (DataRow row in reader.Table.Rows) // While DataView contains rows of data
{
posts += row["Post_id"].ToString()+",";
posts += row["Member_id"].ToString() + ",";
posts += row["Post_Comments"].ToString() + ",";
posts += row["Post_Date"].ToString() + ",";
posts += row["Post_Time"].ToString() + ",";
}
return posts;
}
<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Addpost2.aspx.cs" Inherits="Assessment_2.Addpost2" %>
我通过重建项目解决了这个问题...感谢您的帮助。