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POWhy this application is taking so much of memory?
 

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  1. POWhy this application is taking so much of memory?
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    <p>So my problem is, i created one app for my personal use which fetch the html pages from some sites and then display it in a web browser after some alteration. Every thing is working fine but what perturbed me is the memory that it is taking. After querying for 3-4 terms, memory usage reaches to approximate 300-400 mb. </p> <p>Some relevant code from the app is</p> <pre><code>void sentenceBox_Navigated(object sender, WebBrowserNavigatedEventArgs e) { GC.Collect(); } HtmlDocument hd; Word w=new Word(); private void button1_Click(object sender, EventArgs e) { button1.Enabled = false; status.Text = "Processing english req.."; if (checkInHis(queryTxt.Text)) { sentenceBox.AllowNavigation = true; richTextBox1.Text = w.engDefinition; sentenceBox.DocumentText = w.engDefinition; status.Text = "Word found in History.DONE!"; button1.Enabled = true; return; } if (w == null || w.engWordProp != queryTxt.Text) { w.engWordProp=queryTxt.Text; w.loadEngDefn(); w.engDefnLoadedEvent += new Word.engDefnLoaded(w_engDefnLoadedEvent); return; } w.loadEngDefn(); w.engDefnLoadedEvent += new Word.engDefnLoaded(w_engDefnLoadedEvent); } void w_engDefnLoadedEvent(Word sender, EventArgs data) { sentenceBox.AllowNavigation = true; sentenceBox.DocumentText = sender.engDefinition; sender.engDefnLoadedEvent -= w_engDefnLoadedEvent; button1.Enabled = true; } private void addToHistory(Word w) { status.Text = "Saving offline..."; if (!checkInHis(w.engWordProp)) { history.Add(w); // label1.Text = w.engWordProp + " saved in localdb. Database size: " + history.Count; w = null; } else { // label1.Text = w.engWordProp + " Skipped. Database size: " + history.Count; } } private Boolean checkInHis(string p) { status.Text = "checking offline storage..."; foreach (Word item in history) { if (item.engWordProp == p) { status.Text = "Word found in history."; w = item; return true; } } status.Text = "Not found in offline database..."; return false; } private void sentenceBox_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { ((WebBrowser)sender).AllowNavigation = false; } private void button2_Click_1(object sender, EventArgs e) { button2.Enabled = false; status.Text = "Requesting hindi definition..."; if (checkInHis(queryTxt.Text)) { sentenceBox.AllowNavigation = true; sentenceBox.DocumentText = w.hindiDef; status.Text = "DONE!"; button2.Enabled = true; return; } if (w == null || w.engWordProp != queryTxt.Text) { w.engWordProp=queryTxt.Text; w.loadHinDefn(); w.HindiDefLoadedEvent += new Word.hindiDefLoaded(w_HindiDefLoadedEvent); return; } w.loadHinDefn(); w.HindiDefLoadedEvent += new Word.hindiDefLoaded(w_HindiDefLoadedEvent); } void w_HindiDefLoadedEvent(Word sender, EventArgs data) { sentenceBox.AllowNavigation = true; sentenceBox.DocumentText = sender.hindiDef; button2.Enabled = true; sender.HindiDefLoadedEvent -= w_HindiDefLoadedEvent; } private void button3_Click(object sender, EventArgs e) { button3.Enabled = false; saveWord(w); button3.Enabled = true; } private void saveWord(Word w) { if (w.hindiDef == "") { w.loadHinDefn(); w.HindiDefLoadedEvent += new Word.hindiDefLoaded(w_HindiDefLoadedEventforHindiSave); } if (w.engDefinition == "") { w.loadEngDefn(); w.engDefnLoadedEvent += new Word.engDefnLoaded(w_engDefnLoadedEventforEnglishSave); } addToHistory(w); } void w_HindiDefLoadedEventforHindiSave(Word sender, EventArgs data) { sender.HindiDefLoadedEvent -= w_HindiDefLoadedEvent1; sender.HindiDefLoadedEvent -= w_HindiDefLoadedEventforHindiSave; } void w_engDefnLoadedEventforEnglishSave(Word sender, EventArgs data) { sender.engDefnLoadedEvent -= w_engDefnLoadedEventforEnglishSave; sender.engDefnLoadedEvent -= w_engDefnLoadedEventforEnglishSave; } void w_HindiDefLoadedEvent1(Word sender, EventArgs data) { saveWord(sender); sender.HindiDefLoadedEvent -= w_HindiDefLoadedEvent1; } void w_engDefnLoadedEvent1(Word sender, EventArgs data) { sender.loadHinDefn(); sender.HindiDefLoadedEvent += new Word.hindiDefLoaded(w_HindiDefLoadedEvent1); sender.engDefnLoadedEvent -= w_engDefnLoadedEvent1; } void initWord(String query) { queryTxt.Text = query; w.engWordProp=queryTxt.Text; w.loadEngDefn(); w.loadHinDefn(); w.engDefnLoadedEvent += new Word.engDefnLoaded(w_engDefnLoadedEvent); w.HindiDefLoadedEvent += new Word.hindiDefLoaded(w_HindiDefLoadedEvent); } </code></pre> <p>Word class</p> <pre><code> public Word(string q) { wb1 = new WebBrowser(); wb2=new WebBrowser(); engWord = q; hindiDef = ""; engDefinition = ""; flagE = false; flagH = false; engUrl = "http://oxforddictionaries.com/definition/english/" + q + "?q=" + q; hindiUrl = "http://dict.hinkhoj.com/hindi-dictionary.php?word=" + q; wb1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(wb_DocumentCompleted); ; wb2.DocumentCompleted+=new WebBrowserDocumentCompletedEventHandler(wb_DocumentCompleted); } public delegate void engDefnLoaded(Word sender, EventArgs data); public event engDefnLoaded engDefnLoadedEvent; protected void onEngDefnLoadCompleated(Word sender, EventArgs data) { if (engDefnLoadedEvent!=null) { engDefnLoadedEvent(this,data); } } public void loadEngDefn() { if (this.engDefinition=="") { // wb1 = new WebBrowser(); wb1.ScriptErrorsSuppressed = true; wb1.Url = new Uri(this.engUrl); } else { if (engDefnLoadedEvent!=null) { engDefnLoadedEvent(this, new EventArgs()); } } } public void loadHinDefn() { if (this.hindiDef=="") { // wb2 = new WebBrowser(); wb2.ScriptErrorsSuppressed = true; wb2.Url = new Uri(this.hindiUrl); } else { if (HindiDefLoadedEvent!=null) { HindiDefLoadedEvent(this, new EventArgs()); } } } [NonSerialized] HtmlDocument hd; void wb_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { if (((WebBrowser)sender).ReadyState == WebBrowserReadyState.Complete) { hd = ((WebBrowser)sender).Document; if (e.Url.ToString() == this.hindiUrl) { parsePage(hd.GetElementById("maint"), "hindi"); ((WebBrowser)sender).DocumentCompleted -= wb_DocumentCompleted; sender = null; } else { parsePage(hd.GetElementById("entryPageContent"), "eng"); ((WebBrowser)sender).DocumentCompleted -= wb_DocumentCompleted; sender = null; } } } private void parsePage(HtmlElement hd, string lan) { HtmlElementCollection he; if (lan == "eng") { he = hd.GetElementsByTagName("section"); foreach (HtmlElement item in he) { this.engDefinition += item.InnerHtml + "&lt;br&gt;"; } flagE = true; engDefnLoadedEvent(this, new EventArgs()); wb1 = null; wb1.Dispose(); return; } else { he = hd.GetElementsByTagName("div"); foreach (HtmlElement item in he) { if (item.GetAttribute("itemprop") == "itemListElement") { this.hindiDef += item.GetElementsByTagName("div")[0].InnerHtml + "&lt;br&gt;"; } } flagH = true; HindiDefLoadedEvent(this,new EventArgs()); wb2 = null; wb2.Dispose(); return; } } </code></pre> <p>Question: How to remove this memory leak issue ?</p> <p>sample pic <img src="https://i.stack.imgur.com/90wu9.png" alt="Memory Snap After two 4-5 queries."></p> <p>After query 25 words.</p> <p><img src="https://i.stack.imgur.com/AUEdM.png" alt="DeadLock"></p>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. USArpit
    1. USArpit
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. COHave you profiled your application at all? Does the amount of memory used scale linearly with the number of queries?
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      1. POWhy this application is taking so much of memory?
      1. USPreston Guillot
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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