{"id":1691,"date":"2022-08-30T15:18:38","date_gmt":"2022-08-30T15:18:38","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2013\/11\/27\/problem-about-visual-c-ide-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:18:38","modified_gmt":"2022-08-30T15:18:38","slug":"problem-about-visual-c-ide-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/problem-about-visual-c-ide-collection-of-common-programming-errors\/","title":{"rendered":"problem about visual-c-ide-Collection of common programming errors"},"content":{"rendered":"<ul>\n<li><img decoding=\"async\" src=\"http:\/\/i.msdn.microsoft.com\/dn186180.LOGO_Win1211(id-id,MSDN.10).png\" \/><br \/>\nmsdn<br \/>\narchived-forums-v-forums visual-c-ide<br \/>\nHelloI have just started working with the Club starter kit and cannot understand how to rectify this error.\u00a0Has anyone a suggestion please?Dim lp As LocationsPicker = CType(FormView1.FindControl(&#8220;LocationPicker1&#8221;), LocationsPicker)The\u00a0preceding line of code is throwing up anInvalidCastException was\u00a0unhandled\u00a0by user codeConversion from type &#8216;DBNull&#8217; to type &#8216;string&#8217; is not validThankyou in anticipation<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.msdn.microsoft.com\/dn186180.LOGO_Win1211(id-id,MSDN.10).png\" \/><br \/>\nmsdn<br \/>\narchived-forums-v-forums visual-c-ide<br \/>\nHi,Didn&#8217;t get any answers from my other thread.\u00a0VS crashes as soon as I click anything in the form designer window. I attached a second instance of VS to it to get debug info:\u00a0System.AccessViolationException was unhandled\u00a0 Message=Attempted to read or write protected memory. This is often an indication that other memory is corrupt.\u00a0 Source=Microsoft.VisualStudio.Shell.Interop\u00a0 StackTrace:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 at Microsoft.VisualStudio.Shell.Interop.IVsTool<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.msdn.microsoft.com\/dn186180.LOGO_Win1211(id-id,MSDN.10).png\" \/><br \/>\nmsdn<br \/>\narchived-forums-v-forums visual-c-ide<br \/>\nVS 2005 Crashes when trying to view designer view of a form. The exception thrown is System.IO.FileNotFoundException was unhandled\u00a0 Message=&#8221;Could not load file or assembly &#8216;SomeDLL&#8217;, Version=1.0.1.411, Culture=neutral, PublicKeyToken=null&#8217; or one of its dependencies. The system cannot find the file specified.&#8221;Where as the file is there in the referenced path. Application can be build and executed with out any problem. But cannot take designer view. The fun is it makes the whole IDE cr<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.msdn.microsoft.com\/dn186180.LOGO_Win1211(id-id,MSDN.10).png\" \/><br \/>\nmsdn<br \/>\narchived-forums-v-forums visual-c-ide<br \/>\nHi,I&#8217;m using visual studio 2010.And when i run the project on debug mode from the visual studio &#8211; and some exception is appear i see strange message box that tell me that some exception appear ( the message is &#8220;external exception e043&#8230;&#8221; ).I cant see the line in the code that make the problem and i don&#8217;t know in this way what i need to fix in the code.I think this is something with my debug option &#8211; but i don&#8217;t know how to fix\/solve it.The try&#8230;catch block does not help &#8211; and this me<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.msdn.microsoft.com\/dn186180.LOGO_Win1211(id-id,MSDN.10).png\" \/><br \/>\nmsdn<br \/>\narchived-forums-v-forums visual-c-ide<br \/>\nhii have to draw set of line in inkpicture control. iam drawing in two diffrent threads. using the same graphics ie g = inkpicture.cretaegraphics(). normally i call two threads randomly. now it is giving error like\u00a0An unhandled exception of type &#8216;System.InvalidOperationException&#8217; occurredin system.drawing.dllAdditional information: The object is currently in use elsewherei think i have to dispose g . how can i do it.<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.msdn.microsoft.com\/dn186180.LOGO_Win1211(id-id,MSDN.10).png\" \/><br \/>\nmsdn<br \/>\narchived-forums-v-forums visual-c-ide<br \/>\nAt least 10 to 15 times a day at random, Visual Studio crashes with &#8220;An unhandled win32 exception occurred in devenv.exe [2520]&#8221;The number in square brackets is different. It only crashes on winform applications. It happens across VS versions and machines. We get messages like this: &#8220;Unhandled exception at 0x7c812a5b in devenv.exe: 0xe0434f4d&#8221; etc&#8230;VS 2005 crashes so often, we cannot get any work at all done. I can find no hits at all searching MS &#8211; but thousands of complain<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.msdn.microsoft.com\/dn186180.LOGO_Win1211(id-id,MSDN.10).png\" \/><br \/>\nmsdn<br \/>\narchived-forums-v-forums visual-c-ide<br \/>\nHi,I would like to ask for help in solving the problem I have came across recently :I have created control derived from DataGridView without specifying any columns.Then, I have put this control on a Form, and added some columns to it.Now, when I want to edit colums, exception is being thrown :&#8221;System.NullReferenceException : Object reference not set to an instance of an object&#8221;The &#8220;Stack trace&#8221; field on error dialog box is empty.I would be grateful for your advice.Best regardsTomekIt seems that<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.msdn.microsoft.com\/dn186180.LOGO_Win1211(id-id,MSDN.10).png\" \/><br \/>\nmsdn<br \/>\narchived-forums-v-forums visual-c-ide<br \/>\nI am wroking with Visual Studio 2005 Professional Edition. currently i developed by a ASP.NET 2.0 web Application. i create a usercontrol (combobox). combobox code given below.namespace New.Web.Controls{\u00a0\u00a0\u00a0 using System;\u00a0\u00a0\u00a0 using System.Collections.Specialized;\u00a0\u00a0\u00a0 using System.Data;\u00a0\u00a0\u00a0 using System.Text;\u00a0\u00a0\u00a0 using System.Web.UI;\u00a0\u00a0\u00a0 using System.Web.UI.HtmlControls;\u00a0\u00a0\u00a0 public class ComboBox : C<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.msdn.microsoft.com\/dn186180.LOGO_Win1211(id-id,MSDN.10).png\" \/><br \/>\nmsdn<br \/>\narchived-forums-v-forums visual-c-ide<br \/>\npublic vw_InsContract_FindItemsRow this[int index] {get {return ((vw_InsContract_FindItemsRow)(this.Rows[index]));}}I&#8217;m using VS 2005.\u00a0 I above routine is throwing this exception when I try to use the X to close the program.\u00a0 It is referring to a drop down combo box that returns a list of Items from a SQL database stored procedure.\u00a0 How do I handle this exception so it won&#8217;t be overwritten then the code is regenerated?India<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.msdn.microsoft.com\/dn186180.LOGO_Win1211(id-id,MSDN.10).png\" \/><br \/>\nmsdn<br \/>\narchived-forums-v-forums visual-c-ide<br \/>\nHi all,When editing an XML document based on a particular set of schemas, I keep getting the following in the Errors tab:Unhandled &#8216;System.NullReferenceException&#8217; in XML EditorObject reference not set to an instance of the objectThings were going fine until I did inheritance in one of the schemas in the set\u00a0(complexType that has complexContent that extends a complexType)&#8230;\u00a0 Now it seems that I&#8217;m toast.The problem only occurs when I open an XML document based on that schema.\u00a0 Opening other docum<\/li>\n<\/ul>\n<p id=\"rop\"><small>Originally posted 2013-11-27 12:31:10. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>msdn archived-forums-v-forums visual-c-ide HelloI have just started working with the Club starter kit and cannot understand how to rectify this error.\u00a0Has anyone a suggestion please?Dim lp As LocationsPicker = CType(FormView1.FindControl(&#8220;LocationPicker1&#8221;), LocationsPicker)The\u00a0preceding line of code is throwing up anInvalidCastException was\u00a0unhandled\u00a0by user codeConversion from type &#8216;DBNull&#8217; to type &#8216;string&#8217; is not validThankyou in anticipation msdn archived-forums-v-forums visual-c-ide [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1691","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/1691","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=1691"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/1691\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=1691"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=1691"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=1691"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}