Adding items to a Listbox from a string with delimiters

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How can I add items to ListBox like from a string using "," as a delimiter. Like suppose I want to add first names to a ListBox. How can I add these items from a string like "rupa,anitha,latha,rani"?

Can any body help me?

Thanks in advance!

Posted 21-Jan-11 2:56am

Rupa1

Updated 21-Jan-11 3:20am

Manfred Rudolf Bihy

v3

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4 solutions

Solution 1

ListBox lst = new ListBox();
        lst.Items.Add(new ListItem("rupa"));
        lst.Items.Add(new ListItem("anitha"));
        lst.Items.Add(new ListItem("latha"));
        lst.Items.Add(new ListItem("rani"));

That is what you looking for ?

Ok now as manfred suggested I can revise my answer like

string str = "hiren,manfred,you,me,all,cp";
string[] items = str.split(',');

for(int i=0;i<items.length;i++)>
{
lst.add(new ListItem(string[i]));
}

Posted 21-Jan-11 3:05am

Hiren solanki

Updated 21-Jan-11 3:24am

v2

Comments

Rupa1 21-Jan-11 9:08am

not line by line sir in listbox like rupa,anitha,latha,rani in one row

Hiren solanki 21-Jan-11 9:11am

Then what's problem with

lst.Items.Add(new ListItem("rupa,anitha,latha,rani")); ?

Rupa1 21-Jan-11 9:13am

dynamically i want to add that sir..static lst.Items.Add(new ListItem("rupa,anitha,latha,rani")); it will work

Hiren solanki 21-Jan-11 9:15am

what's a source for taking data dynamic ? can you please clarify the whole scenario ?

Manfred Rudolf Bihy 21-Jan-11 9:18am

I edited OP's question to make it a little clearer what OP wanted.

Rupa1 21-Jan-11 9:20am

sorry for that sir.........

Sergey Alexandrovich Kryukov 21-Jan-11 13:42pm

Very good, my 5, but please see my minor improvement (a separate answer)

Solution 4

Formally, there are correct answers already.

I would add advice a minor improvement to all the presented codes:

C#

string[] items = source.Split(
    new char[] { ' ', ',' },
    StringSplitOptions.RemoveEmptyEntries);

It allows for more relaxed human-readable requirements for the format of the input.

Posted 21-Jan-11 7:39am

Sergey Alexandrovich Kryukov

Comments

Manfred Rudolf Bihy 22-Jan-11 10:17am

Cood call! 5+ RemoveEmptyEntries is a good option in this case. :)

Solution 2

Use following code example to add items in to listbox

listBox1.Items.Add("rupa");

Posted 21-Jan-11 3:08am

raghu.g

Comments

Rupa1 21-Jan-11 9:10am

not line by line rupa,xxxx,yyyy,zzzzz like sir..........

raghu.g 21-Jan-11 9:12am

how do you retrieve the names?
do you have the first name as a collection or what..??

Rupa1 21-Jan-11 9:19am

ya i ve gridview in that i will check checkbox that all items i want be add in listbox rupa,xxx,yyy...........

raghu.g 21-Jan-11 9:37am

on click of check box in the grid view event add following code

protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
{
StringBuilder sb = new StringBuilder();
foreach(GridViewRow gr in GridView1.Rows)
{
if (((CheckBox)gr.FindControl("CheckBox2")).Checked == true)
{
sb.Append(gr.Cells[2].Text+",");

// 2 here the position of name in the grid view
}
}
ListBox1.Items.Clear();
ListBox1.Items.Add(sb.ToString());
}

I think this is what you are looking for

Rupa1 21-Jan-11 22:54pm

thx sir exactly i am looking for that ...............really thx

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Manfred Rudolf Bihy · Accepted Answer · 2011-01-21T03:11:00

Solution 3

Try this:

C#

public ListBox AddItemsToListBoxFromString(ListBox lb, String strItems, char[] separators)
{
    String[] items = strItems.Split(separators);
    foreach(String item in items)
    {
        lb.Items.Add(item.Trim());
    }
    return lb;
}

A typical call from a code behind file might look like this:

C#

...
AddItemsToListBoxFromString(listBox1, "rupa,anitha,latha,rani", new char[] { ',' });
...

Hope this helps you!

Best Regards,
Manfred

Posted 21-Jan-11 3:11am

Manfred Rudolf Bihy

Updated 21-Jan-11 3:19am

v2

Comments

Hiren solanki 21-Jan-11 9:22am

Thanks for correcting question. Now you wins. +5.

Sergey Alexandrovich Kryukov 21-Jan-11 13:41pm

Very good, my 5, but please see my minor improvement (a separate answer)