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On my form I have a NotifyIcon which has a ContextMenuStrip of ToolStripMenuItem's. Each of the ToolStripMenuItem has a List of ToolStripMenuItem which has two items, like so:
Notify Icon:
-ContextMenuStrip:
--Item1:
---SubItem1:
----Launch
----Remove
---SubItem2:
----Launch
----Remove
--Item2:
---SubItem1:
----Launch
----Remove
When I click on the notify icon, then hover any of the sub items it shows up in the taskbar. Is there some way to not show in the taskbar but still show when I hover over an item?
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Hi guys. I'm writing a little program to interact with a device connected to the COM port and I need to assign different commands(from the device) to specific methods. I've created a single delegate
public delegate void Delegate_Name ()
Every device command is assigned to a delegate/event of Delegate_Name type and store inside a Dictionary object. I can serialize to xml a Dictionary, but when I get to saving the events I received the well known and general exception:
[System.InvalidOperationException] = {"There was an error generating the XML document."}
I'm able to store (serialize) all the information to xml files but I'm unable to save the delegates.
Is there a way to do this?
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You can't serialize delegates. Actually you can't save them in any way at all. They are pointers to the memory location of the method, so they only have a meaning while the same program is still running.
Despite everything, the person most likely to be fooling you next is yourself.
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I'm happy to inform you that I managed to serialize a delegate/event using reflection.
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Do you have control to input IP address version 6 ?
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I am not sure whether a control would be available or not.
However, you can easily create one textbox with the validations as required in a 128 bit IP Address.
Best Regards,
Sam Xavier
www.componentone.com
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hi there ,
I am developing windows service using C#, and finally I want to create a setup file for it to be deployed to the users ,
I need to learn that , and also there is some tasks I need it to change somethings or add some informations on the machine it is installed on , how can I use batch file to achieve that and how can do it within the installation process!!!
How can create setup file for the user which should do every thing (including the changes I need)
please help
thanks in advance
There is always something to learn
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I have a numeric textbox that is connected to my database (NumberOfPages).
How can I allow the user to leave this field in the form empty?
It should be done automatically, because in my database the row NumberOfPages allows nulls, but if a user leaves it empty on the form, the form "locks" itself (user can click on any button he likes, but they stop working and nothing happens).
What I want is that my textbox accepts empty string. Can it be done, since the data in the textbox is based on the field that is the type of int?
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The most flexible solution is to create a custom control by extending TextBox control. Then you can override its Text property.
EG:
public string Text
{
set{ //.....}
get
{
if (this.Text == "")
return null;
else
return this.Text;
}
}
jayasshc
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How might one be able to login (and at some point) make a new topic on an Invision Power Board v2.3.3?
I only ask as I am making a small Subversion hook, the hook is done but I would just like to add this feature to it.
Thank you very much, I've been trying to do this for a while and I cannot get past the login page.
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You need to use a HttpWebRequest to the start new topic script with a valid post data containing the username, password, topic string, post information string, and what ever else would be posted data to that script.
This other required data would include catchups and other security type devices. Depending on the script there would be referral URL checks to see if the post is coming from a VALID (non expired) url which is allowed to post to that site. Some forum scripts also require an active session with the server to obtain a GUID and other 'check' measures. This can be faked though .NET webrequest by editing the HTTP (or HTTPS if you include SSL support) headers, but such automation wouldn't be trivial if the board scripts have any sort of anti-spammer technology.
A good place to start this would be reading this: http://www.codeproject.com/KB/aspnet/CompressibleHTTP20.aspx[^]
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hi
for example i want a list of windows form name in a combo box ?
thnx
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i dont using an MDI form ...!!!
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What would the purpose of said list be? Are you wanting to control the forms such as showing/hiding them or some other type master/slave function between the forms?
Just making a list of winforms wouldn't do much without other interfaces between each form.
That being the case, how many forms are you using that you need a list of them?
If you have so many you need a list then you should in most cases be using a MDI parent...
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i want to create a security pack that select a form name in application and set that a user can view or edit that form ... and save the name of form in database and in load of form with pass name of form to a sp an db find that user canVeiw Or Can Eidt
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Hi,
you can get a list of all open forms from Application.OpenForms Property
you can create a list of all existing forms using reflection;
if you make them all inherit say MyFormBase and put them in a single assembly,
then interrogate that assembly for any type inheriting from MyFormBase.
Hope this helps.
Luc Pattyn [Forum Guidelines] [My Articles]
This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.
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You need to use reflection and look at each class's base form name (System.Windows.Forms.Form or your subclassed form class name, if any)
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I'm having difficulty using the Visio Drawing Control 2003 and the RichTextBox anywhere in the same application.
e.g.
public partial class VisForm : Form<br />
{<br />
public VisForm()<br />
{<br />
<br />
InitializeComponent();<br />
<br />
RichTextBox rttb1 = new RichTextBox();<br />
string rtf1 = rttb1.Rtf;<br />
rttb1.SelectedRtf = @"{\rtf1\ansi " + "Visible" + @"{\v " + "Hidden" + @"}}";<br />
string rtfText1 = rttb1.Text;<br />
<br />
}<br />
<br />
---<br />
}
First Scenario:
Initialize the RichTextBox BEFORE the Visio Drawing Control. Set rttb.SelectedRtf = @"{\rtf1\ansi " + "Visible" + @"{\v " + "Hidden" + @"}}";
rttb.Text will then be "VisibleHidden" which is correct. With the form displayed press CTRL+F to display the Find Dialog. The result is an AccessViolationException with the following message: "Attempted to read or write protected memory. This is often an indication that other memory is corrupt".
Second Scenario:
Initialize the RichTextBox AFTER the Visio Drawing Control. Set rttb.SelectedRtf = @"{\rtf1\ansi " + "Visible" + @"{\v " + "Hidden" + @"}}";
rttb.Text will then be "Visible" which is WRONG. i.e. the hidden text does not get set when the Visio Control is initialized before the RichTextBox. With the form displayed, this time pressing CTRL+F results in the Find Dialog being displayed with no problem.
Any ideas?
Thanks,
B.
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I need to use lambda expressions or other way to
specify default query for dlinq entity type.
Code below causes compile error shown in comment.
How to fix ?
Andrus.
using System;
using System.Linq;
// '<' unexpected : attributes cannot be generic
[QueryAttribute<Supplier>(d=> d.Discriminator=="Domestics")]
class DomesticsSupplier {
public string Discriminator { get; set; };
public string Name { get; set; };
}
class QueryAttribute<TEntity> : Attribute {
IQueryable<TEntity> Query;
internal QueryAttribute(IQueryable<TEntity> query) {
Query = query;
}
}
Andrus
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You can't fix it. Attributes are used at compile time. You can not use runtime values to determine the value for an attribute.
Despite everything, the person most likely to be fooling you next is yourself.
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This *is* pure compile time expression. It does not contain ani variables.
So it can resolved.
Andrus
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There are two problems here:
1) Attributes can not be generic.
2) Even tho your expression can be resolved at completime, you can not use it in an attribute.
attributes are really picky about what you pass to them
for example, one might thing that something like [DefaultValue(Color.Red)] might be valid, since Red seems to be pretty constant... but it is not.
(My guess would be that even tho the structure of expression tree can be resolved at compiletime, the generic types that hold them are only available at runtime and this makes it an illegal value for attributes)
So you are out of luck on this one..
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