C# Discussion Boards - CodeProject

Re: On what occassions would a form not recognize double click message?

2-Oct-06 19:22

Hello

Nothing of what you did seems to make the problem. Are you sure you are clicking on the form itself, and not on a child control. Forgive the stupid question, but if you made your background as a Dock.Fill PictureBox for example, sure clicking it is different than clicking the form itself. Timers may downgrade your form's performance, but never to prevent event firing.

Are you sure that you registered the event, and nothing is unregistering it later using -=??
Are your timers going on very short intervals -eg. less than 5 milliseconds-?
Did you make a breakpoint to see if it's not actually firing, or are you assuming that becaue the code you wrote in the handler doesn't work?

Regards

dy132-Oct-06 19:39

dy13

2-Oct-06 19:39

Thanks, but it appears to be none of the above. Timer events no less than 200 milliseconds, i wouldn't know what could be unregistering it, The event really wasn't firing. I am also pretty sure I am not clicking on any of the controls on the form. But I forgot to include another thing. Because the form is borderless, i put in the following code taken from codeproject to be able to move the form. Could this be the cause? But it is strange because another form with this code works fine.

private void MyObj_MouseDown(object sender, MouseEventArgs e)
{
canMove = true;
x0=e.X;
y0=e.Y;
}

private void MyObj_MouseUp(object sender, MouseEventArgs e)
{
if(e.Button==MouseButtons.Left)
{
canMove = false;
}
}

protected virtual void MyObj_MouseMove(object sender, MouseEventArgs e)
{

if(e.Button==MouseButtons.Left)
{
this.Top+=e.Y-y0;
this.Left+=e.X-x0;
}
}

Re: On what occassions would a form not recognize double click message?

Nader Elshehabi3-Oct-06 1:51

How to write a C# dll to be called in Delphi7

3-Oct-06 1:51

Umm... Non of the above should make the problem... In your Form_Load event try to register it manually again, and see if it fires then.

Regards

luvcloud2-Oct-06 17:17

luvcloud

2-Oct-06 17:17

Hi,

I'm new to C#. Anyone know how can i create a C# dll which can be called by my delphi program?
What I did so far was create a new Class Library project. My codes are as below:

namespace MyTestDll<br />
{<br />
    public class MainTest<br />
    {<br />
       public MainTest()<br />
       {    <br />
       }<br />
<br />
        public void TestCall()<br />
        {<br />
           MessageBox.Show("Method is called");<br />
        }     <br />
    }<br />
}

It was then compiled as MyTestDll.dll
In Delphi, i tried using the usual LoadLibrary() and GetProcAddress() function to call TestCall function (in MyTestDll.dll), but it didn't work. Anyone can help me? Thanks!

Nader Elshehabi2-Oct-06 18:28

2-Oct-06 18:28

Hello

.Net code -exe or dll- is not actually machine code as normal non .net compilers would generate. It's rather an IL -Intermediate Language- that is compiled JIT -Just In Time- in excution. So if you don't use Delphi .Net you won't be able to make calls to a managed .Net dll. Well, not directly.

Regards

luvcloud2-Oct-06 18:34

luvcloud

2-Oct-06 18:34

I cannot use Delphi .Net as my current program is written in Delphi 7. How do i call it 'indirectly' then?

Nader Elshehabi2-Oct-06 19:07

2-Oct-06 19:07

One suggestion is to make you C# code another exe program, then communicate between the two programs some way. Example:
1- Make C# a console program and send your parameters as commandline arguments.
2- Make you C# a Windows service or a formless exe file and communicate using sockets for example.

Well, I hope this works! Otherwise you'd have to use C++ rather than C#.

Regards

Crystal Reports single field

Tim Wri2-Oct-06 23:05

Tim Wri

2-Oct-06 23:05

This site has a set of Delphi components that help in calling .NET assemblies. I've used them and they worked great: http://www.managed-vcl.com[^].

StyrofoamSUV2-Oct-06 17:17

StyrofoamSUV

2-Oct-06 17:17

Hey all. I am new to Crystal Reports and was wondering of someone could give me a hand involving adding single data fields to a report.

What I mean by this is, I have a DataSet that contains all the fields I want per row, however, I also want a generic field that does not pertain to the row.

For example, I have a DataSet whose Table name is "Person" and contains the entities, Name, Age, Sex, etc... What I want to add to the report, aside from the rows containing Name, Age, and Sex, is a data field at the top that is user-defined. Perhaps I want to put "Goo goo ga ga" at the top of the report. Instead of having to add an entity to the DataSet, can I define a field in the report, place the field on the report somewhere, and edit it via my code?

I hope you understand what I mean.

Thanks!
-Josh

Re: Crystal Reports single field

StyrofoamSUV4-Oct-06 7:55

StyrofoamSUV

4-Oct-06 7:55

Figured out how to do this incase anyone is interested.

1) Add a Text object to your report by right-clicking on the report and selecting Insert->Text Object
2) Set the Name of the object in the Properties window
3) Note the Page Header Section the object resides in
4) CrystalDecisions.CrystalReports.Engine.TextObject myObject = (CrystalDecisions.CrystalReports.Engine.TextObject)theReportClassInstance.theSectionNumber.ReportObjects[ "theObjectName" ];
myObject.Text ="whatever i want";

cheers

removing xml attributes [modified]

lagumaster2-Oct-06 16:16

lagumaster

2-Oct-06 16:16

hi everyone,

i want to get all the attributes of an element and put them under that element. but i don't know why at some elements their attributes are displayed beside it and i want to get rid of the namespace too. see the code below and tell me what's wrong with it.

private void populateTreeView(XmlNode node2Iterate, TreeNode currNode)
{
XmlNode xNode;
TreeNode tNode;
XmlNodeList nodeList;
TreeNode attrNode = new TreeNode();

if (node2Iterate.HasChildNodes)
{
nodeList = node2Iterate.ChildNodes;
for(int i = 0; i<=nodeList.Count - 1; i++)
{
TreeNode tn;
xNode = node2Iterate.ChildNodes[i];
tn = new TreeNode("<" + xNode.Name + ">");

currNode.Nodes.Add(tn);
tNode = currNode.Nodes[i];
populateTreeView(xNode, tNode);

if(node2Iterate.ChildNodes[i].Attributes != null)
{
foreach(XmlAttribute attr in node2Iterate.ChildNodes[i].Attributes)
{
string attrs = null;
attrs = "<" + attr.Name + "=\"" + attr.Value + "\"" +">";
currNode.Nodes[i].Nodes.Add(attrs);
}
}
}
}
else
{
currNode.Text = (node2Iterate.OuterXml).Trim();
}
}

the output looks like this on a treeView control:
-<ns:element attr1="a" attr2="b" xmlns:ns="http://testing.com">
-<attr1="a">
-<attr2="b">

thanks for any help!

-- modified at 23:41 Monday 2nd October, 2006

Re: removing xml attributes

Stefan Troschuetz2-Oct-06 21:21

Stefan Troschuetz

2-Oct-06 21:21

I think the problem is the following line:

currNode.Text = (node2Iterate.OuterXml).Trim();

Use the LocalName property instead of OuterXml.

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook

www.troschuetz.de

Re: removing xml attributes

lagumaster3-Oct-06 17:23

lagumaster

3-Oct-06 17:23

thanks alot for your reply, that fixed my problem Big Grin | :-D

How should I implement throttling an application's bandwidth using c#? [modified]

suchnight2-Oct-06 15:31

suchnight

2-Oct-06 15:31

As I using Adobe Flash as a part of my web application UI,
I really want to simulate somekind of bandwidth when I develop Flash and Server on one PC.
For that ,
I would like to write a windows form to throttle and monitor Flash's(or other appliaction's) bandwidth.

But I dont know how to implement this idea using C# just like Webspeed Simulator(http://www.xat.com/wo/index.html)
Poke tongue | ;-P

### Thanks, Nader Elshehabi Rose | [Rose]

###
But in some condition, I publish my project as a stand-alone one(a .exe file) or writing C# windows form chat client.

-- modified at 22:25 Monday 2nd October, 2006

Re: How should I implement throttling an application's bandwidth using c#?

Nader Elshehabi2-Oct-06 16:00

2-Oct-06 16:00

Hello

You can do something like a bottle-neck for your WebBrowser. Here is my suggestion:

1- Make a windows Form.
2- Inherit a class from WebBrowser class. Lets calld in WebSim.
3- In WebSim, Handle the Navigating event, and get the new URL yourself.
4- Get the document stream, and load the document yourself. Use Thread.Sleep() method to delay loading ebtween requests according to the speed you desire.
5- Display the document, either as the usual way -part by art as loaded- or when it's fully loaded.

NB.
I haven't tested the above suggestion thoroughly, so it might not work. Otherwise you'd have to write your browser from the scratch using HTTP requests.

Regards

How to print Form ?

hdv2122-Oct-06 11:15

hdv212

2-Oct-06 11:15

hi
i use VS2005 .
i have a form that has a Panel and many labels,Textboxs Controls .. in runtime, User fill this Textbox and print it, But how to printpreview and rint this form correctly ?? (because many controls in Panel ,The panel scrollbar appear in Printpreviewdialog(in one article in codeproject)).
thanks ..

Nader Elshehabi2-Oct-06 12:46

2-Oct-06 12:46

Hello

In CodeProject there are two printing articles that I know of capable of doing this.

One of them I wrote[^], and might cause the problem you are talking about. In this case -and until I update it and fix this issue-, you have to print each control alone.

The other is this article[^], which I think solves your problem, but loses the visual styles.

Regards

S. Senthil Kumar2-Oct-06 23:50

S. Senthil Kumar

2-Oct-06 23:50

Does this blogpost[^] help?

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

hdv2123-Oct-06 1:19

hdv212

3-Oct-06 1:19

hi S. Senthil Kumar

i could not access this component from your link ..

http://blogs.msdn.com/brada/archive/2006/09/23/768683.aspx

Please give me another link for download this component.