I am trying to program a app for chain letters.
This is my Template: https://learn.microsoft.com/en-us/previous-versions/office/troubleshoot/office-developer/automate-word-create-file-using-visual-c
This is my code: https://github.com/440z/2021-07-01_WindowsFormsAppFuerKettenBriefMitWord
The error occurs in file Form1.cs in line 171.
Word._Document oDoc;
// ...
object oBookMark = "MyBookmark";
oDoc.Bookmarks.Item(ref oBookMark).Range.Text = "Some Text Here"; // L171
error CS1061: 'Bookmarks' does not contain a definition for 'Item' and no accessible extension method 'Item' accepting a first argument of type 'Bookmarks' could be found (are you missing a using directive or an assembly reference?)
I set a using directive and made a assembly reference how described in the template.
Add a reference to Microsoft Word Object Library. To do this, follow these steps:
On the Project menu, click Add Reference.
On the COM tab, locate Microsoft Word Object Library, and then click Select.
and
using Word = Microsoft.Office.Interop.Word;
using System.Reflection;
I just don't get it!!!
It looks like Bookmarks has an indexer, so: try one of
oDoc.Bookmark[ref oBookMark].Range.Text = "Some Text Here";
or
oDoc.Bookmark[oBookMark].Range.Text = "Some Text Here";
However, I would expect this to now complain that you're trying to access an invalid key, meaning: there is no existing bookmark keyed by "MyBookmark"
I'm a beginner at writing and understanding C#. I would like to know how to reuse some code I have that updates a WebService username and password credentials.
Here is code in 1st cs File:
...
public class AuthenticateLogin
{
public static object PassCredentials()
{
ServiceName.UsersClient clientauthentication = new ServiceName.UsersClient();
clientauthentication.ClientCredentials.UserName.UserName = "user";
clientauthentication.ClientCredentials.UserName.Password = "pwd";
}
}
...
Here is code in 2nd cs File:
var test = AuthenticateLogin.PassCredentials();
Console.WriteLine(test.EchoAuthenticated("Successful Login"));
Error Received:
Error CS1061 'AuthenticateLogin' does not contain a definition for 'EchoAuthenticated' and no accessible extension method 'EchoAuthenticated' accepting a first argument of type 'AuthenticateLogin' could be found (are you missing a using directive or an assembly reference?)
Solution desired:
In the second file, I want to be able to use the methods in the 'clientauthentication' of the first file. I need to be able to use the 'clientauthentication' like a common object in multiple other cs files. FYI: I can use the 'clientauthentication' methods fine in the 1st file and it works okay.
i trying to call a form as show dialog in in main coding
i have added below screen shot to help you guys under what i am asking. I have tried search on the internet but wasn't able to find a solution too.
but itemsDeleteScreen,itemsEditScreen and AddScreens works perfectly
image screenshot - http://i.stack.imgur.com/E66du.png
the items DeleteScreen Code : (Which Works)
itemsDeleteScreen deleteItem = new itemsDeleteScreen();
deleteItem.ShowDialog(this); // loads the Delete Items Screen
the StockInsScreen Code : (Whic Does not Work)
stockInsScreen stkIns = new stockInsScreen();
stockInsScreen.ShowDialog(this);
the error which i getting when i compile is
The type or namespace name 'stockInsScreen' could not be found (are you missing a using directive or an assembly reference?)
Navigate to StockInScreen Class and check the namespace, it would be like(yourproject.foldername) and add that name space in the class you want to use.(Source:From Image you have provided).For information about namespace,look at http://msdn.microsoft.com/en-us/library/z2kcy19k.aspx
my situation is the next: I'm working with Visual C# 2010 express developing a Windows Forms Application. When the user logins, dinamically build a menustrip with options loaded from a database table. In that table i save id, option name and Form Name.
So, suppose that in my project i have a Form named Contabilidad, it has Contabilidad.cs that is the main class , so if i wanna create a new form and show it i do this:
Contabilidad frmConta = new Contabilidad();
frmConta.Show();
But in this case, because the menu options are stored in database, in database i only have the string "Contabilidad". So, i want to use C# reflection to create a instance of Contabilidad or any other form only with class name in string format.
First i tried this:
Form frmConta= (Form)Activator.CreateInstance(null, "Contabilidad").Unwrap();
Because i read in a StackOverflow question that if i use null i'm referring to current assembly (my forms are all in the same project), but i get this message:
Could not load type 'Contabilidad' from assembly 'AccountingSA, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
The class definition is the next:
namespace AccountingSA {
public partial class Contabilidad : Form
{
public Contabilidad()
{
InitializeComponent();
} ...
Also i tried this:
Assembly assembly = Assembly.Load("AccountingSA");
Type t = assembly.GetType("Contabilidad");
Form frmConta = (Form)Activator.CreateInstance(t);
But i get ArgumentNullException with this message:
Value cannot be null. Parameter name: type
Because t variable is null.
What i'm do wrong? Thanks in advance.
Use the fully-qualified name of the type:
Type t = assembly.GetType("AccountingSA.Contabilidad");
From the documentation for Assembly.GetType(string):
name Type: System.String
The full name of the type.
[...] The name parameter includes the namespace but not the assembly.
You're trying to use the name of the class without specifying the namespace. This should be fine:
Assembly assembly = Assembly.Load("AccountingSA");
Type t = assembly.GetType("AccountingSA.Contabilidad");
Form frmConta = (Form)Activator.CreateInstance(t);
Every version of GetType requires the fully-qualified type name; the benefit of using Assembly.GetType is that at least you don't need to also include the assembly name, but as documented you still need the namespace:
The name parameter includes the namespace but not the assembly.
Note that to diagnose something similar in the future, it would have been worth looking at the value of t after the second line - it will be null, which is why the third line threw an exception.
You should add the namespace:
assembly.GetType("AccountingSA.Contabilidad");
Try this
Form frmConta= (Form)Activator.CreateInstance(null, "AccountingSA.Contabilidad").Unwrap();
Try specifying your class this way:
ContabilidadNamespace.Contabilidad, ContabilidadAssembly
Its too late in the thread to answer, but the earlier answer, in current .NET framework (4.7), not working (The line Assembly assembly = Assembly.Load("AccountingSA"); always throws FileIOException). Currently, working code is (Use Type directly)
Type t = Type.GetType("AccountingSA.Contabilidad");
Form frmConta = (Form)Activator.CreateInstance(t);
or other way using Assembly is
Assembly assembly = typeof(Form).Assembly;
Type t = assembly.GetType("AccountingSA.Contabilidad");
Form frmConta = (Form)Activator.CreateInstance(t);
I have written a custom dialog (form) that I can use in a C# program that behaves much like a "File - Open" menu command and brings up a window where a user can select a file or directory.
The question I have is this. It has "My Computer" as its root. How can I have it so that it searches on a Network? If the file or directory is located on a network.
Or better yet, in Visual Studio 2010, is there some sort of canned FileOpenDialog that I can use right away?
I tried calling the OpenFileDialog as described in the example code at
http://msdn.microsoft.com/en-us/library/system.windows.forms.openfiledialog.aspx
but the compiler does not seem to like DialogResult.OK as used in this line of code:
if(openFileDialog1.ShowDialog() == DialogResult.OK)
The compiler says:
Error 1 'System.Nullable' does not contain a definition for 'OK' and no extension method 'OK' accepting a first argument of type 'System.Nullable' could be found (are you missing a using directive or an assembly reference?)
I tried using the namespace Microsoft.Win32 instead of System.Windows.Forms and neither worked. They both produced this error.
Looks like you are trying to use a WinForms (System.Windows.Forms) dialog.
Here is the MSDN page for WPF dialog boxes from the Microsoft.Win32 namespace.
An excerpt:
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.FileName = "Document"; // Default file name
dlg.DefaultExt = ".txt"; // Default file extension
dlg.Filter = "Text documents (.txt)|*.txt"; // Filter files by extension
// Show open file dialog box
bool? result = dlg.ShowDialog();
EDIT: missed the WPF tag. My bad. What Henk Holterman said.
Have you added the namespace that the example tells you to: System.IO?
I might be wrong, but it sounds like you have created a variable called DialogResult which is of type System.Nullable