Re: I like convert Icon to String - C# Discussion Boards

Re: Packing and deploying C# .Net application

rajasekar_2913-Mar-05 23:03

rajasekar_29

13-Mar-05 23:03

Thanks for ur reply.

But how to write my own installer using C#?

Regards
Rajasekaran

XML Parsing

jatin.mehta@gmail.com13-Mar-05 21:49

jatin.mehta@gmail.com

13-Mar-05 21:49

<company user="53601"><workspace id="12381" name="AdamWorkspaceTest" comment_section_term="crackTab" comment_term="funkie"><folder id="20241" name="[no folder]"><comment id="180741" name="View Count Test"><attachment id="5-180741-80621" name="PubsListUnread.gif" size="23085" last_updated="8 Oct 2004 15:23:36 GMT" downloadurl="/servlets/GetCommentAttachmentProxy?resourceId=180741&attachmentId=80621&wsID=12381" unread="N" checked="N"><attachment id="5-180741-80631" name="PusListRead.gif" size="25255" last_updated="8 Oct 2004 15:23:36 GMT" downloadurl="/servlets/GetCommentAttachmentProxy?resourceId=180741&attachmentId=80631&wsID=12381" unread="N" checked="N"><folder id="173231" name="1st Folder"><folder id="699101" name="012345678901234567890123456789012345678901234567890123456789"><folder id="1044991" name="012345678901234567890123456789012345678901234567890123456789"><folder id="1045001" name="012345678901234567890123456789012345678901234567890123456789"><document id="1372641" name="012345678901234567890123456789012345678901234567890123456789">

I have more than one WORKSPACE TAG, each tag with ID, Name & some other attribute, if i want to fetch all name attribute in Combobox,how can i do that ? i m using C#

Jatin Mehta

Re: XML Parsing

Christian Wikander13-Mar-05 22:19

Christian Wikander

13-Mar-05 22:19

You can use the GetElementsByTagName method of an XmlDocument object. The method will return an XmlNodeList that is enumerable. The following code assumes that you have an XmlDocument set up in the variable xdMyXmlDoc.

XmlNodeList xnlElements = xdMyXmlDoc.GetElementsByTagName("WORKSPACE");
foreach(XmlElement xeThis in xnlElements)
{
// Do something
}

If you don't want to fetch XmlElements, change XmlElement within the foreach to whatever is in your Xml file.

Parsing XML

Anonymous13-Mar-05 21:45

Anonymous

13-Mar-05 21:45

I like convert Icon to String

VictorVB13-Mar-05 20:56

VictorVB

13-Mar-05 20:56

Hello
I have following problem:
I need to store in database Icons, but I don't want to use Blobs, I'd like to convert Icon in to String and store String in database and retrive Icons from String. I can do this , but the String is very-very long and I can't store in MSSQL database. Is any alghoritm for reduce length of string? Or have anybody a good advice?
Thank you
Victor

Re: I like convert Icon to String

J4amieC13-Mar-05 22:24

J4amieC

13-Mar-05 22:24

VictorVB wrote:
but I don't want to use Blobs

Storing binary data in a databaser is usually done using some form of BLOB field, SQLServer has the Image datatype which would work... can I ask why you dont want to do this?

VictorVB wrote:
but the String is very-very long

I assume you've used Base64 encoding to turn the binary data to a string, again this will work but I dont think there is a way to reduce the length of the data.

The only advice I can give you is to store the path to the file in your database (No BLOB Field and no long string data), but thats not what you said you wanted to do.

Re: I like convert Icon to String

VictorVB13-Mar-05 23:50

VictorVB

13-Mar-05 23:50

Thank you.
My idea is to Convert Icon in to primitive type like String or other else and sore in database, I want primitive base type like String, Long...not blob.
I can Convert Icon into byte-array and to string but...is to much long Smile | :)

Re: I like convert Icon to String

J4amieC14-Mar-05 0:57

J4amieC

14-Mar-05 0:57

The string representation of Binary data is inherantly quite a large number of characters. It needs to be to represent quite alot of data.

Have you looked at Convert.ToBase64String()? Thats about the best string-representation you're likely to find.

bypassing the button event

maheshfour13-Mar-05 20:11

maheshfour

13-Mar-05 20:11

hi friends,
how can i bypass the button event on certain conditions? Confused | :confused:

like i can in while() loop using break statement.

Re: bypassing the button event

Christian Wikander13-Mar-05 21:26

Christian Wikander

13-Mar-05 21:26

You can attach and detach the eventhandler. If you look at the "Windows Form Designer generated code" you can see how the connection between the event and the code is done.
If the code that should be triggered by the event is in button1_Click the code would be as follows:

private void AttachEventHandler()
{
this.button1.Click += new System.EventHandler(button1_Click);
}

private void DetachEventHandler()
{
this.button1.Click -= new System.EventHandler(button1_Click);
}

But why don't you just check the conditions using an if statement in the event code?

Re: bypassing the button event

ameto13-Mar-05 23:37

ameto

13-Mar-05 23:37

thanks for replying

i tried using
this.button1.Click -= new System.EventHandler(button1_Click);

inside the button_click event

but the next time i click the button nothing happens.

Re: bypassing the button event

Christian Wikander13-Mar-05 23:46

Christian Wikander

13-Mar-05 23:46

Ofcourse. My example detach the link between the event and the code. You will have to use the attach function to restore the link.

In .NET, the Event - Code relationship is not like in VB6. You can programmaticly set up what code to execute when an event is triggered. You can even add more than one function to be called. I assumed this was what you were trying to do. If this is not what you need, I think you should add an if statement in the button1_Click function that checks the conditions before executing the code.

Re: bypassing the button event

maheshfour14-Mar-05 0:05

maheshfour

14-Mar-05 0:05

actually i have a main form which calls the input form as modal. there is OK and cancel button on the input form. if the user presses cancel the form closes. if the user presses OK the software checks if all the inputs are correct. in the main form i am using the dialogresult property of the input form. i have set ok as dialogresult of the OK button. so irrespective ofthe validity of the inputs the input form returns the dislog result.

this is why i was trying to exit the buttonOk_click event if the inputs were not valid.

Re: bypassing the button event

mav.northwind14-Mar-05 0:17

mav.northwind

14-Mar-05 0:17

This can be solved very easily, without having to fiddle with button event handlers.
In your button event handler you could do something like this:

private void OKButton_Click(object sender, EventArgs e)
{
  bool inputsOk = true;
  // ... check your inputs and set inputsOk to false if one input
  // is invalid
  if ( !inputsOk )
    this.DialogResult = DialogResult.None;
  else
  {
    this.DialogResult = DialogResult.Ok;
    this.Close();
  }
}

That way the Dialog will stay open unless all inputs are valid.

mav

Re: bypassing the button event

maheshfour14-Mar-05 0:28

maheshfour

14-Mar-05 0:28

i had tried te same thing but it does not work.

in the ok button property i have set the dialog result property as none.

i have to press the OK button twice to assign the dialog result property to the button

Re: bypassing the button event

mav.northwind14-Mar-05 0:53

mav.northwind

14-Mar-05 0:53

Then you must have some other errors in your code.
The DialogResult property of your Button just determines the value of your Form's DialogResult property when the button is pressed.

At the end of your button event handler, the dialog is closed if the Form's DialogResult property is not DialogResult.None, simple as that.

If you don't want the dialog to close you have to set it's DialogResult to DialogResult.None.

So in my example, the call to this.Close(); is superfluous, but I wanted to show you where the dialog gets closed.

mav

Re: bypassing the button event

Pushkar Pathak15-Mar-05 19:22

Pushkar Pathak

15-Mar-05 19:22

Sorry my bad ... I think mav.northwind has provided the ideal example although there are ways to do it this example is ideal ... i didnt read it before i wrote the reply

Pushkar Pathak

Re: bypassing the button event

Pushkar Pathak15-Mar-05 19:14

Pushkar Pathak

15-Mar-05 19:14

U can overcome this by many ways

firstly make checks in the main form after the dialog result returned OK and if the validity check fails showdialog the input form again

otherwise to keep the main form free from the validity check mechanism
check in the button click event ... since a modal dialog is not destroyed until disposed raise a flag that says "Wrong INput" and let main form check this flag and show the main form again .....

or set the dialog result for the form and the button to none and set the dialogresult for the form in the event if the check is alright so that clicking the button doesnt close the form but u do programitically when reqd and that the main for sees only the dialog result for the form .. take a look at this

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcon/html/vbtskretrievingdialoginformation.asp[^]

Pushkar Pathak

How can I embed my application to .NET environment?

Anonymous13-Mar-05 20:09

Anonymous

13-Mar-05 20:09

Let's have a look at http://www.alachisoft.com/overview.htm [^]
This is a .NET code generator used for developing COM+ architechture.
Tier Developer uses it's own project have extension named *.tdvp. This file type can be understood by .NET and they work well with each other.
My question is: how to do this? How to write an aplication that can be embed to .NET environment?

bypassing the button evet

maheshfour13-Mar-05 20:09

maheshfour

13-Mar-05 20:09

hi friends,

dfgdfgdfgdfg

Delete multi row in datagrid

joy_priyank13-Mar-05 19:18

joy_priyank

13-Mar-05 19:18

Hello dear all

i am some bit problem that i wnat to delete mutirow in datagrid how i can delete it. i have search more it there is not one property in datagrid please help me

Priyank Gupta

Re: Delete multi row in datagrid

J4amieC13-Mar-05 22:29

J4amieC

13-Mar-05 22:29

A datagrid has a datasource, you must delete rows from there.

Re: Delete multi row in datagrid

joy_priyank13-Mar-05 23:36

joy_priyank

13-Mar-05 23:36

yes i know that but first i want know thata how many row select in datagrid
please tell me how do ou find that how many row select in datagrid there is nay propert that we can find it Please help me

thanks for reply

Priyank Gupta

curve fitting

bwagz13-Mar-05 13:05

bwagz

13-Mar-05 13:05

I'm trying to do logarithmic curve fitting to plotted data points.
The equation is as follows:

y = a + b*ln(x)

The problem is that I have no clue how to compute the 'a' and 'b' coefficients.
Can anyone think back to scientific comp to remember how this is done?

Thanks

Re: curve fitting

Sean Cundiff13-Mar-05 14:02

Sean Cundiff

13-Mar-05 14:02

let u=ln(x)

then y = a + b*u

now use the method of least squares to find a and b.

Note: you are using the method of least squares to find y(u), so everywhere you would use x in least squares now use u(=ln(x)).

There are several good resources on the web. Google for 'Least squares' and 'logarithm'.

-Sean
----
Shag a Lizard

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