I was writing my Patient class, for clinic software, and wanted to add a Photo property, but the Image class doesn't seem to be working in my code, don't know why, considering that I have included System.Drawing.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
namespace ClinicFiles
{
public partial class Patient : Person
{
public Image Photo { get; set; }
//etc. etc.
}
}
P.S. What site do you find the best guideline to a beautiful Windows Application design? :) Nice and professional user interface, all details taken care of, as fonts, etc etc. :)
Try right-clicking your project References and adding System.Drawing.
Related
I've recently tried to customize the tabbar using a custom ShellRenderer in my app using Xamarin and Visual Studio 2019. I've found this question where someone does exactly what I need and the question has an answer which explains it in great detail.
Now, my problem is that when trying to build the app, I get the following error:
'CustomBottomNavAppearance' does not implement interface member 'IShellBottomNavViewAppearanceTracker.SetAppearance(BottomNavigationView,IShellAppearanceElement)' (Errorcode CS0535, line 32)
Now, the sample project that the user in the other question provides works perfectly on my machine, yet implementing it in my project doesn't work, although they are practiacally identical.
I expect this to be very obvious for an advanced user, so sorry about that, I'm still learning and would like to just implement this feature right now, even if my skills might not allow me to do that.
Thanks in advance for any replies!
This is my 'MyShellRenderer.cs' class:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Google.Android.Material.BottomNavigation;
using MyProject;
using MyProject.Droid;
using Xamarin.Forms;
using Xamarin.Forms.Platform.Android;
[assembly: ExportRenderer(typeof(AppShell), typeof(MyShellRenderer))]
namespace MyProject.Droid
{
public class MyShellRenderer : ShellRenderer
{
public MyShellRenderer(Context context) : base(context)
{
}
protected override IShellBottomNavViewAppearanceTracker CreateBottomNavViewAppearanceTracker(ShellItem shellItem)
{
return new CustomBottomNavAppearance();
}
}
public class CustomBottomNavAppearance : IShellBottomNavViewAppearanceTracker
{
public void Dispose()
{
}
public void ResetAppearance(BottomNavigationView bottomView)
{
}
public void SetAppearance(BottomNavigationView bottomView, ShellAppearance appearance)
{
IMenu myMenu = bottomView.Menu;
IMenuItem myItemOne = myMenu.GetItem(0);
if (myItemOne.IsChecked)
{
myItemOne.SetIcon(Resource.Drawable.icon_about);
}
else
{
myItemOne.SetIcon(Resource.Drawable.icon_feed);
}
}
}
}
Edit: I've just found out that the issue actually only exists with the Android version (well, the iOS version at least doesn't throw the error).
Update: I have been able to fix the issue by using "using Google.Android.Material.BottomNavigation;" "using Android.Support.Design.Widget;". My guess it that the old one is now deprecated and only works with the 4.x.x releases, not my 5.x.x release. Thanks everyone!
Per this docs,The error does not implement interface member Errorcode CS0535 means A class must implement all members of interfaces from which it derives or else be declared abstract.So the issue must be that the method SetAppearance has not been correctly implemented.When I Remove or Comment the SetAppearance method, the error appears.
The solution is that using using Google.Android.Material.BottomNavigation instead of using Android.Support.Design.Widget.
Once again i need your help.. Anywho.. I've managed to get this code below to "work". the part there doesn't work is "this". I've no idea of what to use in static and how it works. I'm rather new to this aswell, so i might need some explenation for dummies.
Anyway. This code below is suppossed to be my "mainform", where everything is loaded like icons, size, settings, menu and whatever not.
Currently i'm trying to add a global "settings". which can be loaded from all the forms. So each invidual forms would be this.ClientSize = new System.Drawing.Size(1440, 900); and anything else i may add would have same impact on the form. like icons, opacity, whatever not.
Overally it's just a place to store settings there can be accessed from any other forms.
What i've written below here, is what i've managed so far. The SettingsOnProgramStart is recognised in my Settings form, but it does not change the Clientsize or the icon. It's pobably because of the "this" as it shows red lines.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace lala.events
{
public partial class TrayMenu : Form
{
public TrayMenu()
{
InitializeComponent();
SettingsOnProgramStart();
}
}
public static void SettingsOnProgramStart()
{
//
// Load global settings.
//
this.Icon = new Icon("images/skin/global/icon.ico");
this.ClientSize = new System.Drawing.Size(1440, 900);
}
}
}
Settings file :
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace lala.events
{
public partial class Settings : Form
{
public Settings()
{
InitializeComponent();
TrayMenu.SettingsOnProgramStart();
}
}
}
Thank you for your time and sorry for any problems this may have caused :/
I'd love if anyone could give me a useful link to a "configuration for dummies", where i'd learn about using cfg, ini for my project. so i can get the invidual settings loaded from a file.
You need to pass the form whose settings need to be set in:
public static void SettingsOnProgramStart(Form formToSet)
{
//
// Load global settings.
//
formToSet.Icon = new Icon("images/skin/global/icon.ico");
formToSet.ClientSize = new System.Drawing.Size(1440, 900);
}
Used as:
//When called from another form
TrayForm.SettingsOnProgramStart(this);
As to settings, see MSDN application settings: http://msdn.microsoft.com/en-us/library/k4s6c3a0(v=vs.110).aspx
As an aside; this code doesn't really make sense as part of the TrayForm class, as its not related to that object at all. It should likely be a member of a GlobalSettingsManager class, or something similar.
I decided to try working with C# over c++ but ran into a problem.
The following code snippet shows the problem.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Microsoft.DirectX;
using Microsoft.DirectX.Direct3D;
using System.Device;
namespace Project_AREA
{
public partial class Form1 : Form
{
private Device device;
public Form1()
{
InitializeComponent();
}
}
}
That's as much code as I have right now.
In private Device device;, the keyword Device is not getting recognized although all the libraries have been referenced and the using directives are included.
Any ideas?
Managed to Solve the problem.. for your reference and also if other run in to the same problem. You must add all the following references to the project: (note all files can be found on your had disk at c:\Windows\Microsoft.NET\DirectX for Managed Code) 1: Microsoft.DirectX.dll from folder 1.0.2902.0 2: Microsoft.DirectX.Direct3D.dll from folder 1.0.2902.0 3: MicrosoftMicrosoft.DirectX.Direct3DX.dll from folder 1.0.2911.0 Thanks for the help tho guys :)
I am extracting images from pdf in c#.
Someone has suggested that use Aspose namespace which is a third party namespace.
I have downloaded the aspose and included in my project as a reference.But the problem is i am not able to find the class PdfExtractor which is used to extract images.
I am sharing the link in which some one has suggested to use aspose and also sharing my code.
This is a link
and my code in which i just include aspose
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Aspose;
using Aspose.Pdf;
using Aspose.Pdf.Devices;
using Aspose.Pdf.DOM;
using Aspose.Pdf.Generator;
using Aspose.Pdf.InteractiveFeatures;
using Aspose.Pdf.Structure;
using Aspose.Pdf.Text;
namespace Imageget
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
}
}
And The class which is suggested in the link is PdfExtractor i am also sharing its code below so one can not waste his time to go to link.
PdfExtractor objExtractor = new PdfExtractor();
//bind input pdf file
objExtractor.BindPdf("input.pdf");
//extract image with specific mode
objExtractor.ExtractImage(ExtractImageMode.Default);
//check if images extracted and save them one by one
while (objExtractor.HasNextImage()) {
objExtractor.GetNextImage(DateTime.Now.Ticks.ToString() + ".jpg");
}
A first sight at google told me that you might need to add namespace:
Aspose.Pdf.Facades
Check out here and see the tree at the left.
and don;t forget to look at my comment at the top, it always help to find the namespace of class if i am unable to find it.
hope it helps!
I made the same ASP.NET C# project in both VS2010 and MonoDevelop using these two classes among the standard files (Site.Master, Web.Config, Default.aspx, etc.) and recieve this same error (CS0234) seen at the bottom.
Login.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using mynamespace;
namespace mynamespace
{
public partial class Logon
{
public void btnClicked(object sender, EventArgs e)
{
//ERROR IS HERE:
mynamespace.Test session = new mynamespace.Test();
//Obviously, this doesn't work either:
Response.Write(session.echoUser());
}
}
}
Test.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using mynamespace;
namespace mynamespace
{
public class Test
{
public string echoUser()
{
return "foobar";
}
}
}
I recieve the same error in both IDEs, here is the MonoDevelop error:
The type or namespace 'Test' does not exist in the namespace 'mynamespace' (are you missing an assembly reference?) (CS0234) Logon.cs
Basically, the class Test refuses to instantiate. Any input is appreciated!
If you have that Test class in an ASP.Net web project, then you need to place it in the App_Code folder, not just anywhere in the site.
You need to refer the projects to each other, if you haven't done so yet. I'm guessing that you don't get the intellisense to show the class in the other namespace, right?
You can see the References on the right side (most cases) under your project view. You can right click there and choose to Add reference. Then you browse to the binaries from the pther projects. (You might be able to point to the project itself too - I don't have VS in front of me at the moment.)
Also, It's a convention to use camel case for namespaces, so it should be MyNameSpace.
If the classes are in the same project, you might want to skip using mynamespace and refer to the class by Test intead of mynamespace.Test.
If these are both in the same project, please check that both files are included in the project and have the "Build Action" property set to "Compile". Please also check that all of these namespaces have exactly matching spelling and casing.