Takes too long to create a big string. - C# Discussion Boards

engsrini29-Jun-06 6:13

29-Jun-06 6:13

This should works...
this.btnGet.Image =global::yournamesapce.Properties.Resources.btn_image;

Note: you must add this image(btn_image) into Resource b4 running this code.

- Smile | :)

Retrieve TextBoxes border colour.

Stu Richardson28-Jun-06 22:26

Stu Richardson

28-Jun-06 22:26

Hi
I've created a control which I want to look identical to a textbox. The only problem is I cant work out how to calculate the border colour for a normal textbox so I can set it onto my control.

I know I could probably do this by hardcoding RGB values but I dont think this is the best way incase it ever changes.

Any help would be very much appreciated. Big Grin | :-D

Stu Richardson

Re: Retrieve TextBoxes border colour.

JoeSharp28-Jun-06 22:42

JoeSharp

28-Jun-06 22:42

hi
try out this class System.Windows.Forms.ControlPaint

Re: Retrieve TextBoxes border colour. [modified]

Stu Richardson28-Jun-06 23:10

Stu Richardson

28-Jun-06 23:10

Thankyou but unfortunately I did have a bash at that and could not resolve it. That class seems to work well with everything bar text boxes!

Thankyou for the idea though.

Stu Richardson

-- modified at 5:41 Thursday 29th June, 2006

[.Net1.1][Winform] MaximizeBox event ?!

Seb.2628-Jun-06 22:16

Seb.26

28-Jun-06 22:16

Hello

I've got a problem ... as you can imagine ...

I have a WinForm with MaximumSize defined, and MaximizeBox enabled ...

My problem is that when user click on Maximize box, the winform got upper-left corner of the screen, and take the maximize size as defined, it's very weird ...

Is it possible to force the form centered when MaximizeBox is clicked ?

How to override this event ( MaximizeBox clicked ) ?

Thanks in advance for your help.

Sebastien.

Re: [.Net1.1][Winform] MaximizeBox event ?!

Nader Elshehabi28-Jun-06 23:25

Nader Elshehabi

28-Jun-06 23:25

Hello
There is no Maximized event to override. Instead try overriding SizeChanged event.
Something like this:

SizeChangedHandler(params...)
{
if(WindowState == Maximized)
{
if(Height > Screen.PrimaryScreen.WorkingArea.Height)
{
Top = 0
}
else
{
Top = Screen.PrimaryScreen.WorkingArea.Height / 2 - Height / 2; //To center the Form vertically
}
if(Width > Screen.PrimaryScreen.WorkingArea.Width)
{
Left = 0;
}
else
{
Left = Screen.PrimaryScreen.WorkingArea.Width / 2 - Width / 2; //To center the Form horizontally
}
}
}

Re: [.Net1.1][Winform] MaximizeBox event ?!

engsrini29-Jun-06 6:22

engsrini

29-Jun-06 6:22

As you said ur winform in MaximumSize then so u want ur winform in always maximized state right.. use Form's MaximizeBox property to disable Maximize button.
this.MaximizeBox = false;

Hope this helps u..
Smile | :)

Takes too long to create a big string.

sergestusxx28-Jun-06 21:41

sergestusxx

28-Jun-06 21:41

Hi!

I'm building a big xml string with a for loop and it takes veeeeeeeeeeeeeery much to complete this process. Later on I load it in an XmlDocument and save it in a file. This last thing takes no time.

The loop is something like:

<br />
string xml = "<Top>";<br />
for (int i=0; i < <ArrayList>.Count; i++){<br />
<br />
xml += "<Something>";<br />
xml += bla bla;<br />
xml += "</Something>";<br />
xml += <Object>.ToXml();  //This calls a method which returns an xml string of another object (may call another one inside too).<br />
...<br />
...<br />
<br />
}<br />
xml += "</Top>";<br />

I know than the process may not be linear in time, but is there any known way to speed up this proccess? When the thing gets big (2MB xml file) it's really annoying to wait tons of minutes for this to save.

Thanx for any help!

Re: Takes too long to create a big string.

Martin#28-Jun-06 21:52

Martin#

28-Jun-06 21:52

For this you should use the StringBuilder Class.
Here I made a Method wich gives back a string.

public string CreateText(string[] textarray)
{
if(textarray != null)
{
StringBuilder lsb_Format = new StringBuilder();
for(int x=0; x < textarray.Length; x++)
{
lsb_Format.Append(textarray[x]);
}
return lsb_Format.ToString();
}
return "";
}

All the best,

Martin

Re: Takes too long to create a big string.

sathish s28-Jun-06 21:52

sathish s

28-Jun-06 21:52

Use a stringBuilder. It will certainly speed up the process.
Its better explained in this post.
http://www.codeproject.com/script/comments/forums.asp?forumid=1649&mode=all&userid=1875522&select=1519454&df=100&exp=0&fr=3178.5#xx1519454xx

Re: Takes too long to create a big string.

Sushant Duggal28-Jun-06 21:53

Sushant Duggal

28-Jun-06 21:53

hi,

Y dont u directly write it into file?

By adding string it consumes much more memory, try using StringBuilder.
Its available in System.Text namespace.

Thanks

Sushant Duggal.

How to get cell containg Text from datagrid in Winforms

ranandbe28-Jun-06 20:42

ranandbe

28-Jun-06 20:42

Hai all,

I have a problem datagrid in Winforms about getting the selected row containing cells value,I know this is very simple in web application but i am new for win application can you please give the idea.

ranandbe

Re: How to get cell containg Text from datagrid in Winforms

aruna_susee29-Jun-06 0:28

aruna_susee

29-Jun-06 0:28

Hi,
If u want each column value of selected row then loop it with ColumnNumber

TextBox2.Text = DataGrid1.Item(DataGrid1.CurrentCell.RowNumber,
DataGrid1.CurrentCell.ColumnNumber)

Re: How to get cell containg Text from datagrid in Winforms

ranandbe29-Jun-06 20:50

ranandbe

29-Jun-06 20:50

Hi thanks for reply,
I can't get the Item property for that grid in Windows Forms Application, i thought you mentioned the web form grid control, is there any way to get web form grid control to win forms application.

ranandbe

Re: How to get cell containg Text from datagrid in Winforms

aruna_susee29-Jun-06 21:18

aruna_susee

29-Jun-06 21:18

yes in windows application only
u wil have item property check once again
Private Sub DataGrid1_CurrentCellChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DataGrid1.CurrentCellChanged
TextBox2.Text = DataGrid1.Item(DataGrid1.CurrentCell.RowNumber, DataGrid1.CurrentCell.ColumnNumber)
End Sub

how to use RowFilter Property of DataView in C#?

Alamzeb khan28-Jun-06 20:41

Alamzeb khan

28-Jun-06 20:41

How can i use RowFilter Property of DataView in C#?

Re: how to use RowFilter Property of DataView in C#?

ketankumar28-Jun-06 21:19

ketankumar

28-Jun-06 21:19

RowFilter is used when you want to display some but not all rows of datatable based on some criteria. This criteria is specified in RowFilter. It is similar to that of using WHERE clause in your SELECT query.

For more reference please visit:

http://davidhayden.com/blog/dave/archive/2006/02/11/2798.aspx[^]

Regards,
Ketan.

Windows services

Pardeep.hsp28-Jun-06 20:41

Pardeep.hsp

28-Jun-06 20:41

How can we notify the client that the task has been completed by the windows service

how to insert the element of a array of ArrayList in a DataGrid

foysal mamun28-Jun-06 20:16

foysal mamun

28-Jun-06 20:16

i want to insert elemet of a array of ArrayList in a DataGrid. but how.plz help me.

Re: how to insert the element of a array of ArrayList in a DataGrid

Martin#28-Jun-06 20:32

Martin#

28-Jun-06 20:32

Hope this helps you;

ArrayList.Rows.Clear();

for(int _x=0;x<ArrayList.Count;x++)
{
DataRow _row = DataTable.NewRow();
_row["???"] = ArrayList[x];
DataTable.Rows.Add(_row);
}

All the best,

Martin Smile | :)

Re: how to insert the element of a array of ArrayList in a DataGrid

stancrm28-Jun-06 20:44

stancrm

28-Jun-06 20:44

See this example:

ArrayList arrayList = new ArrayList();
arrayList.Add(1);
arrayList.Add(2);
arrayList.Add(3);

DataTable dataTable = new DataTable("Table1");
dataTable.Columns.Add(new DataColumn("Column1", typeof(int)));

foreach(int i in arrayList)
{
	DataRow dataRow = dataTable.NewRow();
	dataRow["Column1"] = i;
	dataTable.Rows.Add(dataRow);
}

this.dataGrid1.DataSource = dataTable;

How to migrate c# projects to 64-bit platforms? [modified]

Eric Vonjacson28-Jun-06 19:43

Eric Vonjacson

28-Jun-06 19:43

Hi,

I have a big solutions which includes many c# projects and c++ projects. Some c++ project use the dll files generated by the c# projects. Now I begin to migrate the whole solution to 64-bit platforms. After setting the project, I found all the c# projects in this solution can not generate the expected dlll files.

I am a little confused. Could you help me if you are familiar with this?

Thanks a lot.

-- modified at 1:44 Thursday 29th June, 2006

Re: How to migrate c# projects to 64-bit platforms?

stancrm28-Jun-06 20:30

stancrm

28-Jun-06 20:30

As far as I know, there is no 64 bit compiler for C# or C++.NET. But for C++ (unmanaged) you can use for example Intel C++ Compiler.

reading and writing to ports

Emyat28-Jun-06 17:56

Emyat

28-Jun-06 17:56

I'm currently working on a monitoring system for tank overflows. I am using C#.net on a windows CE. How can I read and write to IO ports on Windows CE? What dll should I use?

Re: reading and writing to ports

engsrini29-Jun-06 6:25

engsrini

29-Jun-06 6:25

User SerialPort class that resides on

Namespace: System.IO.Ports
Assembly: System (in system.dll)

Hope this helps u
Smile | :)

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