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このASP.NETエラーについては多くの投稿を見ましたが、コードにどのように適用されるかわかりません。例外の詳細：System.Exception：同じキーを持つ項目が既に追加されています
ページは、開発マシンでエラーなくロードされます。私は私の生産マシンでエラーを取得します。
[Exception: An item with the same key has already been added.]
bli_main.Page_Load(Object sender, EventArgs e) in c:\inetpub\wwwroot\bli_main.master.cs:149
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
System.Web.UI.Control.LoadRecursive() +71
System.Web.UI.Control.LoadRecursive() +190
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3064
これは、エラーの原因が私のPage_Load関数の閉じ括弧とラインであるライン149、上にあることを述べています。
これは、エラーを表示しているページの完全なソースコードです。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using MySql.Data.MySqlClient;
using System.Text.RegularExpressions;
using System.Web.Script.Serialization;
using System.Net;
using System.Configuration;
public partial class bli_main : System.Web.UI.MasterPage
{
public static string connectionString = ConfigurationSettings.AppSettings["connectionString"];
string sql;
//poll variables
List<string> poll_ids = new List<string>();
List<string> poll_long_descriptions = new List<string>();
List<string> poll_short_descriptions = new List<string>();
List<List<string>> questions = new List<List<string>>();
List<List<int>> questionTypes = new List<List<int>>();
List<List<int>> questionIDs = new List<List<int>>();
List<List<string>> responses = new List<List<string>>();
Dictionary<string, List<string>> d_questions = new Dictionary<string, List<string>>();
Dictionary<string, List<int>> d_questionTypes = new Dictionary<string, List<int>>();
Dictionary<string, List<int>> d_questionIDs = new Dictionary<string, List<int>>();
Dictionary<string, List<string>> d_responses = new Dictionary<string, List<string>>();
protected void Page_Load(object sender, EventArgs e)
{
MySqlConnection connector = new MySqlConnection(connectionString);
MySqlCommand command;
MySqlDataReader reader;
TableRow columnsRow = new TableRow();
Table1.Rows.Add(columnsRow);
columnsRow.VerticalAlign = VerticalAlign.Top;
connector.Open();
//pull table columns from database
sql = "SELECT * FROM column_table WHERE column_page_key = @page";
command = new MySqlCommand(sql, connector);
command.Parameters.AddWithValue("@page", pageNumber.Value);
command.CommandTimeout = 30000;
reader = command.ExecuteReader();
try
{
while (reader.Read())
{
TableCell c = new TableCell();
columnsRow.Cells.Add(c);
c.BorderWidth = 1;
c.ID = "column_" + reader["column_id"].ToString();
if (reader["column_type_key"].ToString().Equals("1"))
c.Width = 600;
if (reader["column_type_key"].ToString().Equals("2"))
c.Width = 250;
}
}
catch (Exception ex)
{
reader.Close();
connector.Close();
throw new Exception(ex.Message);
}
finally
{
reader.Close();
connector.Close();
}
//for each column, pull all widgets and load them in, and make an add-widget button
foreach (TableCell c in columnsRow.Cells)
{
string column_id = (c.ID.Split('_'))[1];
sql = "SELECT * FROM widget_instance_table, widget_instance_content_table "
+ "WHERE [email protected] AND widget_instance_id=widget_instance_content_widget_instance_key";
connector.Open();
command = new MySqlCommand(sql, connector);
command.Parameters.AddWithValue("@column", column_id);
reader = command.ExecuteReader();
try
{
//for each widget in the column
while (reader.Read())
{
Table t = new Table();
t.BorderWidth = 1;
c.Controls.Add(t);
TableCell cc;
string widgetType = reader["widget_instance_content_type_key"].ToString();
//if it's an article widget
if (widgetType.Equals("7")) buildArticleWidget(t, reader["widget_instance_content_content_key"].ToString());
//if it's a tweet widget
else if (widgetType.Equals("13")) buildTweetWidget(t);
//if it's a poll widget
else if (widgetType.Equals("12")) buildPollWidget(t, reader["widget_instance_id"].ToString());
//if it's a testimonial widget
else if (widgetType.Equals("4")) buildTestimonialWidget(t, reader["widget_instance_id"].ToString());
//if it's a standard content widget
else if (widgetType.Equals("1")) buildStandardContentWidget(t, reader["widget_instance_id"].ToString());
//otherwise
else
{
t = new Table();
t.BorderWidth = 1;
TableRow r = new TableRow();
cc = new TableCell();
c.Controls.Add(t);
t.Rows.Add(r);
r.Cells.Add(cc);
cc.Text = "Other widget type goes Here";
}
}
}
catch (Exception ex)
{
reader.Close();
connector.Close();
throw new Exception(ex.Message);
}
finally
{
reader.Close();
connector.Close();
}
}
}
protected void buildTestimonialWidget(Table t, string widget_id)
{
TableRow r;
TableCell c;
t.BorderWidth = 1;
r = new TableRow();
c = new TableCell();
t.Rows.Add(r);
r.Cells.Add(c);
c.Text = "Testimonial " + widget_id + " goes here.";
MySqlConnection dataConn = new MySqlConnection(); ;
dataConn.ConnectionString = connectionString;
dataConn.Open();
//get widget configuration info from database
string sql = "SELECT * from content_table, widget_instance_content_table "
+ "WHERE widget_instance_content_content_key = cont_id "
+ "AND widget_instance_content_widget_instance_key = @widget_id";
MySqlCommand dataCmd = new MySqlCommand(sql, dataConn);
dataCmd.Parameters.AddWithValue("@widget_id", widget_id);
MySqlDataReader dataReader = dataCmd.ExecuteReader();
string article_title = "";
string article_content = "";
try
{
if (dataReader.Read())
{
article_title = dataReader["cont_desc"].ToString();
article_content = dataReader["cont_content_1"].ToString();
}
}
catch (Exception ex)
{
dataReader.Close();
dataConn.Close();
throw new Exception(ex.Message);
}
finally
{
dataReader.Close();
dataConn.Close();
}
r = new TableRow();
t.Rows.Add(r);
c = new TableCell();
r.Cells.Add(c);
c.Text = article_title;
r = new TableRow();
t.Rows.Add(r);
c = new TableCell();
r.Cells.Add(c);
c.Text = article_content;
c.Text = HttpUtility.HtmlDecode(c.Text);
Regex.Replace(c.Text, "<.*?>", string.Empty);
}
protected void buildStandardContentWidget(Table t, string widget_id)
{
TableRow r;
TableCell c;
t.BorderWidth = 1;
r = new TableRow();
c = new TableCell();
t.Rows.Add(r);
r.Cells.Add(c);
c.Text = "Standard Content " + widget_id + " goes here.";
MySqlConnection dataConn = new MySqlConnection(); ;
dataConn.ConnectionString = connectionString;
dataConn.Open();
//get widget configuration info from database
string sql = "SELECT * from content_table, widget_instance_content_table "
+ "WHERE widget_instance_content_content_key = cont_id "
+ "AND widget_instance_content_widget_instance_key = @widget_id";
MySqlCommand dataCmd = new MySqlCommand(sql, dataConn);
dataCmd.Parameters.AddWithValue("@widget_id", widget_id);
MySqlDataReader dataReader = dataCmd.ExecuteReader();
string article_title = "";
string article_content = "";
try
{
if (dataReader.Read())
{
article_title = dataReader["cont_desc"].ToString();
article_content = dataReader["cont_content_1"].ToString();
}
}
catch (Exception ex)
{
dataReader.Close();
dataConn.Close();
throw new Exception(ex.Message);
}
finally
{
dataReader.Close();
dataConn.Close();
}
r = new TableRow();
t.Rows.Add(r);
c = new TableCell();
r.Cells.Add(c);
c.Text = article_title;
r = new TableRow();
t.Rows.Add(r);
c = new TableCell();
r.Cells.Add(c);
c.Text = article_content;
c.Text = HttpUtility.HtmlDecode(c.Text);
Regex.Replace(c.Text, "<.*?>", string.Empty);
}
protected void buildPollWidget(Table t, string widget_id)
{
MySqlConnection dataConn;
MySqlCommand dataCmd;
MySqlDataReader dataReader;
//get the poll key of the poll from the widget instance table
dataConn = new MySqlConnection();
dataConn.ConnectionString = connectionString;
dataConn.Open();
sql = "SELECT widget_instance_content_content_key from widget_instance_content_table where [email protected]_id";
dataCmd = new MySqlCommand(sql, dataConn);
dataCmd.Parameters.AddWithValue("@widget_id", widget_id);
dataReader = dataCmd.ExecuteReader();
string poll;
try
{
dataReader.Read();
poll = dataReader[0].ToString();
}
catch (Exception ex)
{
dataReader.Close();
dataConn.Close();
throw new Exception(ex.Message);
}
finally
{
dataReader.Close();
dataConn.Close();
}
//get the long and short descriptions of the poll
//get the elements of the poll from the element table
dataConn = new MySqlConnection();
dataConn.ConnectionString = connectionString;
dataConn.Open();
sql = "SELECT * FROM poll_table WHERE [email protected]";
dataCmd = new MySqlCommand(sql, dataConn);
dataCmd.Parameters.AddWithValue("@poll", poll);
dataReader = dataCmd.ExecuteReader();
string poll_long_desc;
string poll_short_desc;
try
{
dataReader.Read();
poll_long_desc = dataReader["poll_long_desc"].ToString();
poll_short_desc = dataReader["poll_short_desc"].ToString();
}
catch (Exception ex)
{
dataReader.Close();
dataConn.Close();
throw new Exception(ex.Message);
}
finally
{
dataReader.Close();
dataConn.Close();
}
//get the elements of the poll from the element table
dataConn = new MySqlConnection(); ;
dataConn.ConnectionString = connectionString;
dataConn.Open();
sql = "SELECT * FROM poll_element_table WHERE [email protected]";
dataCmd = new MySqlCommand(sql, dataConn);
dataCmd.Parameters.AddWithValue("@poll", poll);
dataReader = dataCmd.ExecuteReader();
List<string> qs = new List<string>();
List<int> qtypes = new List<int>();
List<int> qids = new List<int>();
List<string> ans = new List<string>();
try
{
while (dataReader.Read())
{
qs.Add(dataReader["poll_element_question"].ToString());
qtypes.Add(Int32.Parse(dataReader["poll_element_type_key"].ToString()));
qids.Add(Int32.Parse(dataReader["poll_element_id"].ToString()));
ans.Add("");
}
}
catch (Exception ex)
{
dataReader.Close();
dataConn.Close();
throw new Exception(ex.Message);
}
finally
{
dataReader.Close();
dataConn.Close();
}
questions.Add(qs);
questionTypes.Add(qtypes);
questionIDs.Add(qids);
responses.Add(ans);
d_questions.Add(widget_id, qs);
d_questionTypes.Add(widget_id, qtypes);
d_questionIDs.Add(widget_id, qids);
d_responses.Add(widget_id, ans);
TableRow r;
TableCell c;
Button b;
//for each poll
//display poll descriptions
r = new TableRow();
r.CssClass = "bodysan";
t.Rows.Add(r);
c = new TableCell();
c.ColumnSpan = 2;
c.CssClass = "bodysan";
r.Cells.Add(c);
c.Text = poll_short_desc;
r = new TableRow();
t.Rows.Add(r);
c = new TableCell();
c.CssClass = "bodysan";
c.ColumnSpan = 2;
r.Cells.Add(c);
c.Text = poll_long_desc;
//display the questions and response fields
for (int j = 0; j < d_questions[widget_id].Count; j++)
{
r = new TableRow();
r.CssClass = "bodysan";
t.Rows.Add(r);
c = new TableCell();
c.CssClass = "bodysan";
r.Cells.Add(c);
c = new TableCell();
c.CssClass = "bodysan";
r.Cells.Add(c);
c.Text = d_questions[widget_id][j];
//c.Text = questions[0][j];
r = new TableRow();
r.CssClass = "bodysan";
t.Rows.Add(r);
int type = d_questionTypes[widget_id][j];
c = new TableCell();
c.CssClass = "bodysan";
r.Cells.Add(c);
r.Cells.Add(makeResponseCell(type, Int32.Parse(widget_id), j));
}
r = new TableRow();
r.CssClass = "bodysan";
t.Rows.Add(r);
c = new TableCell();
c.CssClass = "bodysan";
r.Cells.Add(c);
b = new Button();
b.CssClass = "bodysan";
c.Controls.Add(b);
b.Text = "Submit Poll";
b.ID = "submit_" + widget_id + "_poll";
b.Click += new EventHandler(this.submit);
}
//stores responses in database.
public void submit(Object sender, EventArgs e)
{
bool valid = true;
//get the poll ID.
Button b = (Button)sender;
string poll = b.ID.Split('_')[1];
//for each repsonse in this poll
for (int i = 0; i < d_responses[poll].Count; i++)
{
Table tb = (Table)b.Parent.Parent.Parent;
TableCell c = tb.Rows[2 * i + 3].Cells[1];
int type = d_questionTypes[poll][i];
string text = "";
if (type == 1)
{
//throw new Exception("i=" + i + ", cellControls=" + c.Controls.Count + ", cellText=" + c.Text);
TextBox t = (TextBox)c.Controls[0];
text = t.Text;
t.Text = "";
}
if (type == 2)
{
RadioButtonList r = (RadioButtonList)c.Controls[0];
text = r.Text;
r.ClearSelection();
}
if (type == 3)
{
RadioButtonList r = (RadioButtonList)c.Controls[0];
text = r.Text;
r.ClearSelection();
}
int element_id = d_questionIDs[poll][i];
string response = text;
//TODO: Update client ID from -1 to real client ID after login is implemented
int client_id = -1;
//responses[poll][i] = text;
MySqlConnection dataConn;
MySqlCommand dataCmd;
dataConn = new MySqlConnection();
dataConn.ConnectionString = connectionString;
dataConn.Open();
try
{
sql = "INSERT INTO poll_response_table "
+ "(poll_response_client_key, poll_response_poll_element_key, poll_response_response) "
+ "VALUES (@client_id, @element_id, @response)";
dataCmd = new MySqlCommand(sql, dataConn);
dataCmd.Parameters.AddWithValue("@client_id", client_id);
dataCmd.Parameters.AddWithValue("@element_id", element_id);
dataCmd.Parameters.AddWithValue("@response", response);
dataCmd.ExecuteNonQuery();
}
catch (Exception ex)
{
dataConn.Close();
throw new Exception(ex.Message);
}
finally
{
dataConn.Close();
}
}
/*
Response.Write("<table><tr><td>");
foreach (string s in responses[poll])
Response.Write(s + "<br/>");
foreach (List<string> l in responses)
{
Response.Write("----- <br/>");
foreach(string s in l)
Response.Write("- " + s + " <br/>");
}
Response.Write("</td></tr></table>");
*/
}
protected TableCell makeResponseCell(int type, int poll, int element)
{
TableCell c = new TableCell();
RadioButtonList r;
TextBox t;
switch (type)
{
//freeform textbox
case 1:
t = new TextBox();
c.Controls.Add(new TextBox());
break;
//yes/no
case 2:
r = new RadioButtonList();
r.RepeatDirection = RepeatDirection.Horizontal;
c.Controls.Add(r);
r.Items.Add("yes");
r.Items.Add("no");
break;
//1-5
case 3:
r = new RadioButtonList();
r.RepeatDirection = RepeatDirection.Horizontal;
c.Controls.Add(r);
r.Items.Add("1");
r.Items.Add("2");
r.Items.Add("3");
r.Items.Add("4");
r.Items.Add("5");
break;
//default = textbox
default:
c.Controls.Add(new TextBox());
break;
}
c.ID = poll + "_" + element + "_response";
return c;
}
protected void buildArticleWidget(Table t, string article_id)
{
TableRow r;
TableCell c;
t.BorderWidth = 1;
r = new TableRow();
c = new TableCell();
t.Rows.Add(r);
r.Cells.Add(c);
c.Text = "Article " + article_id + " goes here.";
MySqlConnection dataConn = new MySqlConnection(); ;
dataConn.ConnectionString = connectionString;
dataConn.Open();
//get widget configuration info from database
string sql = "SELECT * from content_table WHERE [email protected]_id";
MySqlCommand dataCmd = new MySqlCommand(sql, dataConn);
dataCmd.Parameters.AddWithValue("@cont_id", article_id);
MySqlDataReader dataReader = dataCmd.ExecuteReader();
string article_title = "";
string article_content = "";
try
{
if (dataReader.Read())
{
article_title = dataReader["cont_desc"].ToString();
article_content = dataReader["cont_content_1"].ToString();
}
}
catch (Exception ex)
{
dataReader.Close();
dataConn.Close();
throw new Exception(ex.Message);
}
finally
{
dataReader.Close();
dataConn.Close();
}
r = new TableRow();
t.Rows.Add(r);
c = new TableCell();
r.Cells.Add(c);
c.Text = article_title;
r = new TableRow();
t.Rows.Add(r);
c = new TableCell();
r.Cells.Add(c);
c.Text = article_content;
c.Text = HttpUtility.HtmlDecode(c.Text);
Regex.Replace(c.Text, "<.*?>", string.Empty);
}
protected void buildTweetWidget(Table t)
{
MySqlConnection dataConn = new MySqlConnection(connectionString);
dataConn.Open();
//get widget configuration info from database
string sql = "SELECT * from widget_config WHERE widgcon_id=2";
MySqlCommand dataCmd = new MySqlCommand(sql, dataConn);
MySqlDataReader dataReader = dataCmd.ExecuteReader();
int num_tweets_displayed;
string account;
try
{
dataReader.Read();
num_tweets_displayed = (int)(dataReader["widgcon_num_items_displayed"]);
account = dataReader["widgcon_currently_displayed"].ToString();
}
catch (Exception ex)
{
dataReader.Close();
dataConn.Close();
throw new Exception(ex.Message);
}
finally
{
dataReader.Close();
dataConn.Close();
}
string tweets = ("<br/>");
foreach (var tweet in GetTweets(account).Take(num_tweets_displayed))
{
string s = Regex.Replace(HttpUtility.HtmlEncode(tweet), @"[a-z]+://[^\s]+",
x => "<a href='" + x.Value.Replace("'", """) + "' style='tweet_link'>" + x.Value + "</a>",
RegexOptions.Compiled | RegexOptions.IgnoreCase);
tweets += (s + "<br/><br/>");
}
TableRow r = new TableRow();
TableCell c = new TableCell();
c.Text = "Tweet Widget";
t.Rows.Add(r);
r.Cells.Add(c);
r = new TableRow();
c = new TableCell();
t.Rows.Add(r);
r.Cells.Add(c);
c.Text = tweets;
}
// called by buildTweetWidget
public List<string> GetTweets(string account)
{
var ls = new List<string>();
var jss = new JavaScriptSerializer();
try
{
var d = jss.Deserialize<List<Dictionary<string, object>>>(
new WebClient()
.DownloadString("http://api.twitter.com/1/statuses/user_timeline.json?screen_name=" + account));
foreach (var x in d)
ls.Add((string)x["text"]);
}
catch
{
ls.Add("Unauthorized.");
}
return ls;
}
}
私は、重複する変数名を探しているが、いずれかを発見していません。私はこの質問が以前に答えられたのなら謝ります。前もって感謝します！
あなたの 'catch'ブロックは役に立たず、逆効果です。それらを取り除き、_actual_スタックトレースを教えてください。ああ、ああ、 – SLaks
。一瞬します。ありがとうございました。 – brucebolick
また、キャッチして再スローする必要がある場合（SLaksは、これらが冗長であることは間違いありませんが、あなたが最後に何をしているのかもっと詳しく知りたいかもしれません）、スローを使ってスタックトレースをそのままにしてください。 –