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我只是想在ASP.Net C＃中使用Web請求對象來提交表單。這裏我的問題是提前檢查是否有外部應用程序提出的新請求。在asp.net 3.5中的Request.Params和Request.Forms中保留鍵的數量有多少？
這裏是我的控制檯應用程序：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;
using System.Collections;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
// Create web request object
WebRequest objWebRequest;
// Set url properties
string url = "http://localhost:2055/EasyWeb/Admin/Post_History.aspx";
objWebRequest = WebRequest.Create(url);
objWebRequest.Method = "POST";
// add sample form data
ArrayList queryList = new ArrayList();
queryList.Add(string.Format("{0}={1}", "title", "From Admin to All Users"));
queryList.Add(string.Format("{0}={1}", "desc", "hi all users"));
queryList.Add(string.Format("{0}={1}", "category", "Test"));
queryList.Add(string.Format("{0}={1}", "touser", null));
queryList.Add(string.Format("{0}={1}", "status", null));
queryList.Add(string.Format("{0}={1}", "group", null));
queryList.Add(string.Format("{0}={1}", "isfile", "False"));
queryList.Add(string.Format("{0}={1}", "sentdatetime", DateTime.Now.ToString()));
// Set the encoding type
objWebRequest.ContentType = "application/x-www-form-urlencoded";
string Parameters = String.Join("&", (String[])queryList.ToArray(typeof(string)));
objWebRequest.ContentLength = Parameters.Length;
// Write stream
StreamWriter sw = new StreamWriter(objWebRequest.GetRequestStream());
sw.Write(Parameters);
sw.Close();
//we get back the response after submission
HttpWebResponse objHttpWebResponse;
objHttpWebResponse = (HttpWebResponse)objWebRequest.GetResponse();
StreamReader sr = new StreamReader(objHttpWebResponse.GetResponseStream());
}
}
}
，這裏是我的web應用程序的頁面加載方法。
protected void Page_Load(object sender, EventArgs e)
{
if (Request.Params.Keys.Count >54) // this line getting inconsistent no of value
{
using (DataClassesDataContext db = new DataClassesDataContext())
{
Session["Username"] = db.Users.Where(u => u.type_id.Equals("1")).Select(u => u.Username).FirstOrDefault();
string title = null, desc = null, category = null, touser = null, status = null, group = null, isfile = null, sentdatetime = null;
foreach (string strName in Request.Params)
{
string strValue = Request.Form[strName];
switch (strName)
{
case "title":
title = strValue;
break;
case "desc":
desc = strValue;
break;
case "category":
category = strValue;
break;
case "touser":
touser = strValue;
break;
case "status":
status = strValue;
break;
case "group":
group = strValue;
break;
case "isfile":
isfile = strValue;
break;
case "sentdatetime":
sentdatetime = strValue;
break;
}
}
int category_id = db.Categories.Where(c => c.Category_name.Equals(category)).Select(c => c.Id).FirstOrDefault();
int user_id = db.Users.Where(u => u.type_id.Equals("1")).Select(u => u.Id).FirstOrDefault();
System.Nullable<int> touser_id = null;
System.Nullable<int> status_id = null;
System.Nullable<int> group_id = null;
System.Nullable<DateTime> sent_datetime = null;
if (!string.IsNullOrEmpty(touser))
{
touser_id = db.Users.Where(u => (u.First_name + ' ' + u.Last_name).Equals(touser)).Select(u => u.Id).FirstOrDefault();
}
if (!string.IsNullOrEmpty(status))
{
status_id = db.Status.Where(s => s.status_name.Equals(status)).Select(s => s.Id).FirstOrDefault();
}
if (!string.IsNullOrEmpty(group))
{
group_id = db.Groups.Where(g => g.Group_name.Equals(group)).Select(g => g.Id).FirstOrDefault();
}
bool is_file = Convert.ToBoolean(isfile);
if (!string.IsNullOrEmpty(sentdatetime))
{
sent_datetime = DateTime.Parse(sentdatetime);
}
Post myPost = new Post();
myPost.Title = title;
myPost.Category_id = category_id;
myPost.Description = desc;
myPost.User_id = user_id;
myPost.ToUser_id = touser_id;
myPost.status_id = status_id;
myPost.group_id = group_id;
myPost.IsFileAttached = is_file;
myPost.Sent_Datetime = sent_datetime;
db.Posts.InsertOnSubmit(myPost);
db.SubmitChanges();
}
}
if (!Page.IsPostBack)
{
var query = Helper.GetProfile().ToList();
foreach (var item in query)
{
GV_ViewPost.PageSize = item.Page_Size;
}
Panel_AddNew.Visible = false;
Panel_View.Visible = false;
Session["CommandName"] = "Inbox";
Session["ColumnName"] = null;
Session["SearchtText"] = null;
this.FillGrid(Session["CommandName"].ToString(), (String)Session["ColumnName"] ?? null, (String)Session["SearchtText"] ?? null);
Bind_DDL_Column_List();
Bind_DDL_Category_List();
Bind_Users_List();
Bind_DDL_Group();
Bind_DDL_Status();
}
this.GetData();
}
這裏是這一行if (Request.Params.Keys.Count >54)沒有修復保留（默認）鍵的計數no。
通過使用這種技術，我必須檢查第一個新的密鑰找到與否。
有沒有人幫助我。
如果變量空ŧ母雞我有錯誤不能插入null值到表值，因爲我寫入提交語句插入值到數據庫。 –
然後你可以檢查null並拒絕請求（發送錯誤作爲響應）。 – Mahmoodvcs
你沒有我從Response.Params的默認密鑰的想法 –