Re: Search Item in List View - C# Discussion Boards

Re: ask to save before starting new file

Aj_ling2-Nov-06 23:29

Aj_ling

2-Nov-06 23:29

Pete O`Hanlon wrote:
In the button click event, check the .Text property of the textbox and see if it is empty or not.

as a newbie i must ask how do / would i do that??

thanks

Aj...

Re: ask to save before starting new file

Pete O'Hanlon2-Nov-06 23:41

Pete O'Hanlon

2-Nov-06 23:41

I'm assuming here that you've already created the Click event for the button. If you haven't then you need to do this first. Then, assuming your textbox is called myTextbox, you would type something like this:

if (myTextbox.Text.Trim().Length != 0)<br />
{<br />
    //... Show the messagebox here and do the save<br />
}

The Trim() removes any spaces from the end of the text. If the user had just pressed space, this would ensure that the messagebox was not shown.

There are many ways to accomplish this test. You could test to see if myTextbox.Text.Trim() == string.Empty.

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Re: ask to save before starting new file

Aj_ling3-Nov-06 0:13

Aj_ling

3-Nov-06 0:13

Brilliant. Thanks for your help... It all falls into place now. Big Grin | :-D

using Trim() ".Length !=0)" works where as "== string.empty" doesn't appear to do anything.

Once again thank you.

Aj...

Re: ask to save before starting new file

Stefan Troschuetz3-Nov-06 0:24

Stefan Troschuetz

3-Nov-06 0:24

"== string.empty" equals to true when the string is empty whereas ".Length !=0" equals to true when the string contains some characters i.e. isn't empty. Use "!= string.empty" to get equal result.

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regex

ldr_2-Nov-06 22:58

ldr_

2-Nov-06 22:58

Hi all

Im trying to get this regex to fit with dash but i wont work...

regex:
Regex r = new Regex(@"^(([a-zA-Z] Smile | :)

|(\\[\w]+\-[\w]+)\$?)(\\(\w[\w ]*))+\.(cwp|CWP)$", RegexOptions.IgnorePatternWhitespace);

bold is the critical part tried:
(\\[a-zA-Z0-9-]+)
(\\[a-zA-Z0-9\-]+)

this is the path it should match...

C:\Documents and Settings\Cws-Cdh\My Documents\CW Projects\Test\test.cwp

Thanks in advance, chris

Re: regex

Guffa3-Nov-06 0:20

Guffa

3-Nov-06 0:20

You are looking at the wrong part of the pattern. The bold is the part that will match the folder names:

Regex r = new Regex(@"^(([a-zA-Z] Smile | :)

|(\\[\w]+\-[\w]+)\$?)(\\(\w[\w ]*))+\.(cwp|CWP)$", RegexOptions.IgnorePatternWhitespace);

---
b { font-weight: normal; }

Search Item in List View

MJay2-Nov-06 22:28

MJay

2-Nov-06 22:28

Any1 can advise me what to do if i wan to search an item inside a ListView fill by a datatable according to what user type in a text box.

http://img.photobucket.com/albums/v608/mjay83/lookup.jpg[^]

above is a screenshot i taken from a software, i just wonder how they do it, user type inside the lookup textbox, then the list view will auto jump and point to the item which match or nearly match with the user input.

Any1 please? D'Oh! | :doh:

Re: Search Item in List View

HakunaMatada2-Nov-06 23:04

HakunaMatada

2-Nov-06 23:04

The listbox responds to two messages:
CB_FINDSTRING and CB_FINDSTRINGEXACT

These messages are used to find a value in a listbox or a ComboBox.

---

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Re: Search Item in List View

MJay3-Nov-06 21:15

MJay

3-Nov-06 21:15

sorry but i dun really get ur mean....
i am using a listview instead of a listbox D'Oh! | :doh:

Re: Search Item in List View

rah_sin2-Nov-06 23:23

rah_sin

2-Nov-06 23:23

on text boxs textchange event u can try following codes

foreach(ListViewItem itr in listView1.Items)
{
if(itr.SubItems[1].Text==textBox3.Text)
{
//itr.Focused=true;
itr.Selected=true;
}
else
itr.Selected=false;
}
where subitems[1] is second column so u can write column number which u want to match

rahul

Re: Search Item in List View

MJay3-Nov-06 21:19

MJay

3-Nov-06 21:19

hi, thanks for reply
i gonna try tat out
but 1 thing is, my listview contains more than 7k item,
if using this way i think is quite not resource efficency
is there other better way?

copy and paste a control at designtime

webseal2-Nov-06 22:28

webseal

2-Nov-06 22:28

Hi,
is there a simple way to copy/paste a ToolStrip at designtime from one project to another project without loosing all the events that are connected to the toolbuttons?

The code behind the events is existing in both projects. When I copy the toolstrip in project1 and paste it in project2, the toolstrip with all buttons will be copied but not the events that are linked to them

I am working with VS2005 and C#

Thanks
Dirk

Re: copy and paste a control at designtime

Stefan Troschuetz2-Nov-06 22:34

Stefan Troschuetz

2-Nov-06 22:34

You could copy/paste the concerned code from/to the InitializeComponent method.

Re: copy and paste a control at designtime

webseal2-Nov-06 23:26

webseal

2-Nov-06 23:26

I feared that this will be the answer Wink | ;-)

It's not my favourite solution as it is time consuming and error-prone, but obviously the only way to copy controls from one app to the other.

Thanks anyway
Dirk

Draw arc

rzvme2-Nov-06 21:40

rzvme

2-Nov-06 21:40

I had a look at the Drawarc method but i can't understand a thing. I need a draw arc method that requiers : the coordenates for the center of the circle, the radius and the angle it sweeps!

rzvme

Re: Draw arc

Stefan Troschuetz2-Nov-06 22:31

Stefan Troschuetz

2-Nov-06 22:31

It's not that hard.
Instead of a center point and radius the method takes a rectangle which specifies the bounds of the arc. Imagine it the other way round. You have an arc and put a rectangle over it so that the arc touches all sides of the rectangle.
It's simple mathematics to calculate the dimension and position of the rectangle from a center point and radius.
Furthermore the two angle parameters shouldn't be that hard to understand. If the textual description isn't sufficient, simply experiment a bit with them.

How to draw graphs in Image control of Report

Ramith Sivanarain2-Nov-06 21:30

Ramith Sivanarain

2-Nov-06 21:30

Hi, I am using ReportViewer reports for my reporting.
I want to use the Image control(instead of Chart control) report item to draw the graphs. I need a drawing surface to draw the graph using methods from Graphics Class and show it in the Image control when I view the report Confused | :confused:

. Thanking you in anticipation.

Ramith Sivanarain

To change child property attribute .

praveenqwe2-Nov-06 18:51

praveenqwe

2-Nov-06 18:51

Hi,
Can any one help me in changing the attribute value of a child attribute when the parent attribute value is changed .

eg
parent property
[readonly(true)]
parent {get{return child;}set{child =value;}}

child class

class child
{
a {get{return 1;}set{1 =value;}}

}

for this eg if i channge read only attribute for parent it should affect child also,

Thank you

regards

Praveen

Re: To change child property attribute .

sam#2-Nov-06 19:37

sam#

2-Nov-06 19:37

Create an event and fire it when parent properties get changes.in that event pass the object of parent classs.Now you can set you desired child Properties

Re: To change child property attribute .

praveenqwe2-Nov-06 20:13

praveenqwe

2-Nov-06 20:13

hi,
I guess you understood wrongly what i meant was

if i change read only attribute for parent it should affect child also,

eg
parent property
[readonly(true)]
parent {get{return child;}set{child =value;}}

child class

class child
{
a {get{return 1;}set{1 =value;}}

}

Thank you

regards

Praveen

Re: To change child property attribute .

Mairaaj Khan2-Nov-06 21:24

Mairaaj Khan

2-Nov-06 21:24

praveenqwe wrote:
if i change read only attribute for parent it should affect child also

Hi Praveen,

What sam# suggest, is right. See this[^] and this too[^]. Hope these articles may help in giving you a solution.

By the way, what is the meaning of this:

praveenqwe wrote:
a {get{return 1;}set{1 =value;}}

also, my c# compiler gives me an error on the statement 1 = value;, which is The left-hand side of an assignment must be a variable, ...

Regards

_____________________________
Success is not something to wait for, its something to work for.

Open Folder

Rahul.RK2-Nov-06 18:07

Rahul.RK

2-Nov-06 18:07

Hi ,
I want to open the foder. That is on a button click
I want to show folder open in explorer. How to do that?

Rahul Kulkarni.

Re: Open Folder

alexey _N2-Nov-06 18:15

alexey _N

2-Nov-06 18:15

Maybe this article will help you ?

My english is not so good. Please, correct my errors.
Best regards, Alexey.

Re: Open Folder

Rahul.RK2-Nov-06 18:21

Rahul.RK

2-Nov-06 18:21

Thanks For your response.

I want to show the folder content. Take an example,

"path = c:\test\" and now normally if we want to see content of this folder

We have to go through click on My Computer then c: and finally test.

But i want to open test through programming in C#.Net. How to do that?

Rahul Kulkarni

Re: Open Folder

alexey _N2-Nov-06 18:31

alexey _N

2-Nov-06 18:31

Try this code:

<br />
System.Diagnostics.Process.Start("explorer.exe", "c:\\Test");<br />

My english is not so good. Please, correct my errors.
Best regards, Alexey.

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