String Manipulation - C# Discussion Boards

Re: Is this an acceptable way to make a Control Array?

Randal Vance Cunanan3-Dec-09 17:59

3-Dec-09 17:59

I got an error there, i really meant Control, not object. Thanks.

I asked because I saw an article regarding making Control Arrays in C# but
its longer and a lot more complicated.

Re: Is this an acceptable way to make a Control Array?

dan!sh 3-Dec-09 18:29

dan!sh

3-Dec-09 18:29

If you are going to put only textboxes in the array, create an array of TextBoxes. That will avoid all that casting.

50-50-90 rule: Anytime I have a 50-50 chance of getting something right, there's a 90% probability I'll get it wrong...!!

Re: Is this an acceptable way to make a Control Array?

GWBas1c3-Dec-09 19:29

GWBas1c

3-Dec-09 19:29

Consider using a List instead of an array, unless you have specific needs that dictate using an Array. The List class will automatically re-size as you add objects, yet you can still iterate and reference by index.

For example:

List<Control> controls = new List<Control>();

controls.Add(textbox1);
controls.Add(textbox2);
controls.Add(textbox3);

// ect...

controls.Add(textbox99999999999);

for(int i = 0; i < controlArrays.Length; i++)
{
   if(controls[i] is TextBox)
      (TextBox)controls[i].Text = "Element #" + i.ToString();
}

Re: Is this an acceptable way to make a Control Array? [modified]

puri keemti3-Dec-09 22:22

puri keemti

3-Dec-09 22:22

Use Arraylist and then filter the Textbox controls from the form controls to get collection of controls.

visit the link for more info : <a href="http://www.dreamincode.net/forums/showtopic45666.htm">http://www.dreamincode.net/forums/showtopic45666.htm</a>[<a href="http://www.dreamincode.net/forums/showtopic45666.htm" target="_blank" title="New Window">^</a>]

modified on Friday, December 4, 2009 5:39 AM

Re: Is this an acceptable way to make a Control Array?

Shameel3-Dec-09 23:34

Shameel

3-Dec-09 23:34

Use a Generic List. It is much faster, resizes automatically and also avoids runtime type casts.

List<TextBox> textBoxes = new List<TextBox>():
textBoxes.Add(textBox1);
textBoxes.Add(textBox2);
textBoxes.Add(textBox2);

int i =0;

foreach(TextBox textBox in textBoxes) {
    textBox.Text = string.Format("My Array {0}", ++i);
}

Re: Is this an acceptable way to make a Control Array?

freakyit3-Dec-09 23:39

freakyit

3-Dec-09 23:39

Hi,

take a look at the System.ComponentModel.CollectionBase class.

you can write your own ControlCollection and do various operations on Adding to collection..

greetz

Re: Is this an acceptable way to make a Control Array?

PIEBALDconsult4-Dec-09 4:04

PIEBALDconsult

4-Dec-09 4:04

That looks OK, but why would you want to?

String Manipulation

CoderOnline3-Dec-09 17:15

CoderOnline

3-Dec-09 17:15

I Have a string

<Parameters>   
 <UserProfileState>0</UserProfileState>
    <Parameter>  
    <Name>Report_Parameter_0</Name> 
     <Type>String</Type>    
  <Nullable>False</Nullable>  
    <AllowBlank>True</AllowBlank>
      <MultiValue>False</MultiValue>
      <UsedInQuery>False</UsedInQuery> 
     <State>MissingValidValue</State>   
   <Prompt>Report_Parameter_0</Prompt>  
    <DynamicPrompt>False</DynamicPrompt>  
    <PromptUser>True</PromptUser>    </Parameter>    
<Parameter>      <Name>Report_Parameter_1</Name>  
    <Type>String</Type>      <Nullable>False</Nullable>  
    <AllowBlank>True</AllowBlank> 
     <MultiValue>False</MultiValue>  
    <UsedInQuery>False</UsedInQuery>   
   <State>MissingValidValue</State>  
    <Prompt>Report_Parameter_1</Prompt>
      <DynamicPrompt>False</DynamicPrompt>
      <PromptUser>True</PromptUser>  
  </Parameter>  </Parameters>

I want to do string manipulation with this and i want to

<Name>Report_Parameter_0</Name>
they are 2 <name>
its not xml ..!

how to do in good method.!
any help is greatly appreciated..!

Re: String Manipulation

Abhinav S3-Dec-09 17:46

Abhinav S

3-Dec-09 17:46

Can you use C# regular expressions for this?

Re: String Manipulation

CoderOnline3-Dec-09 18:08

CoderOnline

3-Dec-09 18:08

Ty For Your Reply..!
How Can i get the value of

<<Name>Report_Parameter_0</Name>

Report_Parameter_0 for this one..!

Re: String Manipulation

Abhinav S3-Dec-09 18:23

Abhinav S

3-Dec-09 18:23

I guess if you could get down to <<Name>Report_Parameter_0</Name> using regular expressions or otherwise, you could then just use a strings substring or indexOf property to parse the parameter.

<name>Report_parameter_o is actually an xml string, so you could even try using XDocument document = XDocument.Parse(xmlString); via Linq.

I have not tried that myself, so please dont screw me if it does not work Smile | :)

Re: String Manipulation

CoderOnline3-Dec-09 18:27

CoderOnline

3-Dec-09 18:27

Abhinav S wrote:
so please dont screw me if it does not

LoL

Thanks For Your suggestion i will try..! Cool | :cool:

Re: String Manipulation

vivasaayi3-Dec-09 18:35

vivasaayi

3-Dec-09 18:35

Hi

1. The string you posted is a valid XML. So why can't you load the string into an XML Document and navigate through the Child Nodes?

2. Or Use good old plain string matcing. Find the Start Index of <Name> and </name>. Then get the substring.

3. Use Regular Expressions

Re: String Manipulation

puri keemti3-Dec-09 22:25

puri keemti

3-Dec-09 22:25

This is xml file. you can use xml object to find the parameters.......

the Answer..!

sashidhar3-Dec-09 23:18

sashidhar

3-Dec-09 23:18

Answer is Here..!
http://www.codeproject.com/Messages/3293369/Re-Regular-Expression-or-strin-manipulation.aspx[^]

LatestArticle :Log4Net
Why Do Some People Forget To Mark as Answer .If It Helps.

Re: String Manipulation

PIEBALDconsult4-Dec-09 4:06

PIEBALDconsult

4-Dec-09 4:06

It sure looks like XML to me. I'd use an XmlDocument or a Regular Expression.

Re: String Manipulation

Ravi Bhavnani4-Dec-09 12:59

Ravi Bhavnani

4-Dec-09 12:59

This[^] article may help.

/ravi

My new year resolution: 2048 x 1536
Home | Articles | My .NET bits | Freeware
ravib(at)ravib(dot)com

using class string.

sammathews3-Dec-09 14:39

sammathews

3-Dec-09 14:39

hello how do I break the code of a rectangular matrix to determine the no of columns that don't contain any zero element

Re: using class string.

Luc Pattyn3-Dec-09 15:03

Luc Pattyn

3-Dec-09 15:03

sammathews wrote:
using class string

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: using class string.

Mycroft Holmes3-Dec-09 16:08

Mycroft Holmes

3-Dec-09 16:08

Sounds like homework to me!

Never underestimate the power of human stupidity
RAH

Re: using class string.

PIEBALDconsult4-Dec-09 4:12

PIEBALDconsult

4-Dec-09 4:12

You have a two-dimensional array of strings? And you want to test the members to see if any are empty?

I'm sure your teacher or textbook already gave you hints on how to do that.

Highlighting a default treeview node

BDJones3-Dec-09 13:35

BDJones

3-Dec-09 13:35

How do you highlight a treeview node at startup?

I have the node needed from BuildNodeTree() as defaultNode, and the following in frmMain_Load

private void frmMain_Load(object sender, EventArgs e)
        {
            BuildNodeTree();
            treeview.SelectedNode = defaultNode;  
        }

This doesn't highlight the node. I'm assuming because it hasn't displayed yet.

What are my options?

Thank you.

Re: Highlighting a default treeview node

Luc Pattyn3-Dec-09 13:50

Luc Pattyn

3-Dec-09 13:50

Nope. Having treeview.SelectedNode = treeview.Nodes[0]; inside a Form_Load() handler is sufficient provided the TreeView has focus. A lot of Windows Controls don't mark their selections when they don't have focus.

One way of getting there automatically is by making sure treeview.TabStop is true (default) and TabIndex is zero.

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: Highlighting a default treeview node

BDJones3-Dec-09 13:59

BDJones

3-Dec-09 13:59

TabIndex = 0

That was it. Thank you again for your help today.

Re: Highlighting a default treeview node

Shameel3-Dec-09 23:40

Shameel

3-Dec-09 23:40

Setting HideSelection to false highlights the selection (although dimmed) even when the control does not have focus. Most windows controls have a HideSelection property.

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