Post an unselected ListBoxFor in MVC - C# Discussion Boards

phil.o13-Feb-18 23:00

13-Feb-18 23:00

A .NET assembly holds something called the CLR Header, which tells windows that it should use the CLR Loader to read the CLR Header's metadata.
SO: What is contained in a PE Header and CLR Header as part of managed Module in .NET executables?[^]
The CLR Loader[^]
Anatomy of a .NET Assembly – The CLR Loader stub[^]

"I'm neither for nor against, on the contrary." John Middle

Re: How dotnet application run

Mou_kol14-Feb-18 0:09

Mou_kol

14-Feb-18 0:09

thanks a lot Sir for sharing such valuable links.

i have one small question that when we click on dotnet exe or vb6 exe file then how controls goes to windows OS?

for dotnet exe file there is CLR Header, which tells windows that it should use the CLR Loader to read the CLR Header's metadata. but what happen for vb6 exe file when we click on that to run?

please share some knowledge. thanks

Re: How dotnet application run

phil.o14-Feb-18 0:59

phil.o

14-Feb-18 0:59

VB6 is an old language which has nothing to do with .NET (i.e., a VB6 executable has a PE Header but no CLR header). What happens when you click an executable compiled from VB6 is that the assembler code produced by the compilation process is simply executed.
Inside the executable: a VB programmer's guide to the portable executable format[^]
I would not spend too much time on VB6, though, as it is quite outdated nowadays.

"I'm neither for nor against, on the contrary." John Middle

Re: How dotnet application run

Mou_kol14-Feb-18 1:10

Mou_kol

14-Feb-18 1:10

thanks for your another reply sir.

hence my knowledge is low so i am curious to know the inner story of various tool and technology like how they run. java application has any PE header ?

thanks for your time sir. good day Smile | :)

Re: How dotnet application run

Dave Kreskowiak14-Feb-18 2:27

Dave Kreskowiak

14-Feb-18 2:27

ALL .EXE's have the PE header that tells the Windows Loader how to load the executable. It doesn't matter what runtimes the .EXE runs under.

Asking questions is a skill
CodeProject Forum Guidelines
Google: C# How to debug code
Seriously, go read these articles.

Dave Kreskowiak

Re: How dotnet application run

Mou_kol15-Feb-18 21:45

Mou_kol

15-Feb-18 21:45

Morning, thanks a lot for reply.

i am not java guy but i heard java do not come with exe file....so what happen in case of java apps when it run on windows OS?

i heard java has .jar file which is self executable....so jar has PE header?

C and C++ generate exe file when compile....so C and C++ generated exe file has PE header?

please share the knowledge. thanks

Re: How dotnet application run

Dave Kreskowiak16-Feb-18 5:03

Dave Kreskowiak

16-Feb-18 5:03

JAR files are not executable. They are just a bunch of data that Java interprets as code, referred to as "bytecode". Java is a virtual machine environment with its own instruction set. This bytecode isn't run natively by your CPU like .EXE executables.

You apparently don't know how file associations work. Ever double-click a .TXT file or a Word file? You're actually launching the executable associated with that file extension.

For .txt files, the command line launched is

%SystemRoot%\system32\notepad.exe %1

where the %1 is replaced by the full path to the .txt file you double-clicked.

For .jar files, it's no different. The command line launched is something like this:

"C:\Program Files (x86)\Java\jre1.8.0_102\bin\javaw.exe" -jar "%1" %*

Again, the %1 is replaced by the full path to the .jar file.

Asking questions is a skill
CodeProject Forum Guidelines
Google: C# How to debug code
Seriously, go read these articles.

Dave Kreskowiak

Post an unselected ListBoxFor in MVC

VK1913-Feb-18 9:36

VK19

13-Feb-18 9:36

Hi,

I have a view which has two list boxes, one on left contains all the selection, two buttons to "add or remove" selection and one more listbox on right which contains selected values.

I am able to get the list of selected values, but what I would like is the list of unselected values on posting. The object in the model is null for the list of unselected values.

How can pass the list of unselected values?

Thank you!

Re: Post an unselected ListBoxFor in MVC

Eddy Vluggen13-Feb-18 10:57

Eddy Vluggen

13-Feb-18 10:57

VK19 wrote:
I am able to get the list of selected values

VK19 wrote:
How can pass the list of unselected values?

You provide the values? So, "all values" minus "selected values" equals?

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

Re: Post an unselected ListBoxFor in MVC

BillWoodruff13-Feb-18 18:11

BillWoodruff

13-Feb-18 18:11

List<Value> UnSelectedValues = ListOfAllValues.Except(ListOfSelectedValues).ToList();

But, keep in mind: [^].

«... thank the gods that they have made you superior to those events which they have not placed within your own control, rendered you accountable for that only which is within you own control For what, then, have they made you responsible? For that which is alone in your own power—a right use of things as they appear.» Discourses of Epictetus Book I:12

ASP.NET: Buttons generated in code behind will not fire event

Member 958444513-Feb-18 3:10

Member 9584445

13-Feb-18 3:10

Hi
In an ASP.NET page I am generating buttons dynamically in a table, like this:

Button lmButCls = new Button();
lmButCls.Click += new EventHandler(EditUser);
lmButCls.ID = dbDataReader["LOGONNAME"].ToString();
lmButCls.Text = dbDataReader["LOGONNAME"].ToString();
newCell.Controls.Add(lmButCls);

My eventhandler:

public void EditUser(object sender, EventArgs e)
{
   to do code
}

The buttons shows up, but when clicking the "EditUser" nothing happens.
Anybody with an idea to solve this problem?

Best regards, Brian

Re: ASP.NET: Buttons generated in code behind will not fire event

Richard Deeming13-Feb-18 4:38

Richard Deeming

13-Feb-18 4:38

Dynamically Created Controls in ASP.NET[^]

You're probably not recreating the controls when the page posts back; or you're not recreating them early enough.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

I had an error of Email in line " dynamic email = new Email("ChngPasswordEmail");" which say's The type or Namespace name "Email" could not be found Pin

Member 1367430013-Feb-18 0:33

Member 13674300

13-Feb-18 0:33

public void ResetPassword(UserModel model, string Name)
        {

            using (var db = new sortit_internEntities())
            {
                
                string emailAddress = (from info in db.users
                                       where info.name.Equals(model.Name)
                                       select info.email).Single();

                if (!string.IsNullOrEmpty(emailAddress))
                {
                    string confirmationToken =
                        WebSecurity.GeneratePasswordResetToken(model.Name);
                    dynamic email = new Email("ChngPasswordEmail");
                    email.To = emailAddress;
                    email.UserName = model.Name;
                    email.ConfirmationToken = confirmationToken;
                    email.Send();
                    
                }
               
                
            }
        }

for resetting password for login and yes I am new to MVC, this code is in business layer of MVC for kind Information

Re: I had an error of Email in line " dynamic email = new Email("ChngPasswordEmail");" which say's The type or Namespace name "Email" could not be found Pin

CHill6013-Feb-18 1:07

CHill60

13-Feb-18 1:07

Put the appropriate Using statement at the top of the class module and make sure you have included a reference to the appropriate assembly

Re: I had an error of Email in line " dynamic email = new Email("ChngPasswordEmail");" which say's The type or Namespace name "Email" could not be found Pin

Member 1367430013-Feb-18 1:12

Member 13674300

13-Feb-18 1:12

Ya I had add all references for it!

Re: I had an error of Email in line " dynamic email = new Email("ChngPasswordEmail");" which say's The type or Namespace name "Email" could not be found Pin

OriginalGriff13-Feb-18 1:10

OriginalGriff

13-Feb-18 1:10

Look at the error message:

The type or Namespace name "Email" could not be found

It's pretty explicit!

The compiler does not know what the Email class is: it hasn't got one for you to use. Either you haven't added a reference to the assembly containing the class to your project, and a using statement at the top of the file to the namespace the class is in; or just the using statement is missing; or you do not have a class called Email at all.

Hover the mouse over the word "Email" and a little blue bar will appear at the beginning. Hover the mouse over that and a drop down will open suggesting ways to fix it.

Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!

Re: I had an error of Email in line " dynamic email = new Email("ChngPasswordEmail");" which say's The type or Namespace name "Email" could not be found Pin

Dave Kreskowiak13-Feb-18 3:19

Dave Kreskowiak

13-Feb-18 3:19

Nobody else caught this, but why are you using "dynamic"? It's not for the use case what you're using it. That line should read:

Email email = new Email("ChngPasswordEmail");

Dynamic treats your object as an Object type, removes all static checks at compile time, and slows down the code a bit due to having to resolve method calls at runtime. It also makes it harder to write the code and debug it. It should be rare that you have to use the dynamic type.

Asking questions is a skill
CodeProject Forum Guidelines
Google: C# How to debug code
Seriously, go read these articles.

Dave Kreskowiak

C# need help reading XML config file with multiple values in windows forms app

Travis Jacobson12-Feb-18 4:00

Travis Jacobson

12-Feb-18 4:00

I need some help getting this to work. I am trying to read from an XML file that is called "user.config" and is located in "C:\Windows\SysWOW64\config\systemprofile\AppData\Local\MyAppName\user.config". each of the values are Base64 Encrypted (which is nested with more xml). My goal is to be able to read each value independently and store as a variable for later use and to append into textbox1 so that a summary of the settings can be displayed.

Sample XML:

XML

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <userSettings>
        <AppCentral.App.Service.Core.Properties.Settings>
            <setting name="AppXml" serializeAs="String">
                <value>PD94bWwgdmVyc2lvbj0iMS4wIj8+DQo8QXBwTW9kZWwgeG1sbnM6eHNpPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYS1pbnN0YW5jZSIgeG1sbnM6eHNkPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYSI+DQogIDxDR1VJRD4xMjM0NTY3ODk8L0NHVUlEPg0KICA8Q0lEPjEyMzwvQ0lEPg0KICA8Q051bWJlcj4xMjM0PC9DTnVtYmVyPg0KICA8Q05hbWU+VEVTVDwvQ05hbWU+DQogIDxIYXNDSEluc3RhbGw+ZmFsc2U8L0hhc0NISW5zdGFsbD4NCiAgPFZlbmRvcklEPjA8L1ZlbmRvcklEPg0KPC9BcHBNb2RlbD4=</value>
            </setting>
            <setting name="TXml" serializeAs="String">
                <value>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</value>
            </setting>
            <setting name="DXml" serializeAs="String">
                <value>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</value>
            </setting>
            <setting name="CurrentVersion" serializeAs="String">
                <value>1</value>
            </setting>
        </AppCentral.App.Service.Core.Properties.Settings>
    </userSettings>
</configuration>

Re: C# need help reading XML config file with multiple values in windows forms app

Richard MacCutchan12-Feb-18 6:04

Richard MacCutchan

12-Feb-18 6:04

See Convert.FromBase64String Method (String) (System)[^].

Re: C# need help reading XML config file with multiple values in windows forms app

Gerry Schmitz12-Feb-18 6:13

Gerry Schmitz

12-Feb-18 6:13

Deserialize the file into a class (paste special xml as class) if you don't want to parse (e.g. XElement):

   /// <remarks/>
   [System.Xml.Serialization.XmlTypeAttribute( AnonymousType = true )]
   [System.Xml.Serialization.XmlRootAttribute( Namespace = "", IsNullable = false )]
   public partial class configuration {

<pre>
  private configurationUserSettings userSettingsField;

  /// <remarks/>
  public configurationUserSettings userSettings {
     get {
        return this.userSettingsField;
     }
     set {
        this.userSettingsField = value;
     }
  }

}

/// <remarks>
[System.Xml.Serialization.XmlTypeAttribute( AnonymousType = true )]
public partial class configurationUserSettings {

private configurationUserSettingsSetting[] appCentralAppServiceCorePropertiesSettingsField;

/// <remarks/>
[System.Xml.Serialization.XmlArrayAttribute( "AppCentral.App.Service.Core.Properties.Settings" )]
[System.Xml.Serialization.XmlArrayItemAttribute( "setting", IsNullable = false )]
public configurationUserSettingsSetting[] AppCentralAppServiceCorePropertiesSettings {
   get {
      return this.appCentralAppServiceCorePropertiesSettingsField;
   }
   set {
      this.appCentralAppServiceCorePropertiesSettingsField = value;
   }
}

}

/// <remarks>
[System.Xml.Serialization.XmlTypeAttribute( AnonymousType = true )]
public partial class configurationUserSettingsSetting {

private string valueField;

private string nameField;

private string serializeAsField;

/// <remarks>
public string value {
get {
return this.valueField;
}
set {
this.valueField = value;
}
}

/// <remarks>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string name {
get {
return this.nameField;
}
set {
this.nameField = value;
}
}

/// <remarks>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string serializeAs {
get {
return this.serializeAsField;
}
set {
this.serializeAsField = value;
}
}
}

"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal

Re: C# need help reading XML config file with multiple values in windows forms app

Travis Jacobson12-Feb-18 6:22

Travis Jacobson

12-Feb-18 6:22

Thank you. I will give this a try. Is the top one the method and the other 2 below it classes i need to create? Once i am able to read the <value> nodes from the XML it should be much easier after that to decode the base64 and output.

Re: C# need help reading XML config file with multiple values in windows forms app

Gerry Schmitz12-Feb-18 6:35

Gerry Schmitz

12-Feb-18 6:35

"configuration" is the "root"; the others are members.

It's what "Visual Studio" interprets from the XML using paste special.

You should study and understand it; then use it.

"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal

Re: C# need help reading XML config file with multiple values in windows forms app

Travis Jacobson12-Feb-18 7:27

Travis Jacobson

12-Feb-18 7:27

last question. what would the method call look like? can i still use "XDocument doc = XDocument.load(FullFilePath)" to load the file?

<pre lang="c#">public string XMLStrings()
{
XDocument doc = XDocument.Load(@"C:\user.config");
}
</pre>

Re: C# need help reading XML config file with multiple values in windows forms app

Gerry Schmitz12-Feb-18 7:36

Gerry Schmitz

12-Feb-18 7:36

I would use something like this:

XmlSerializer.Deserialize Method (XmlReader) (System.Xml.Serialization)

If you make it "generic", you can reuse it with other files and classes.

"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal

Re: C# need help reading XML config file with multiple values in windows forms app

Travis Jacobson12-Feb-18 7:57

Travis Jacobson

12-Feb-18 7:57

Can you give me an example? im attempting to use it in the same context as that link you provided but that isn't working.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.