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Does anybody know how I can fill a 2 column list from array items

Frank Ryan

5y956

Hi, could someone inform me as I'm new to programming how I can fill a list box that has 2 columns from an array of strings, but I need column 1 to be filled from the array of all the odd numbered items and column 2 to be filled with all the array even numbered items please.

2 Replies

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Hardik Dhankecha5y ago
Hi Frank,
If you're referring to a listbox as a dropdown, you may achieve your goal with third party js. You may use a variety of scripts to display multiple columns in your dropdown list box.

For example, you can use select2js. You can check it on github ("ng-select2").

It will display something like attach screenshot.

+2
Sachin Singh5y ago
use listview, it will be easier for multi-columns, for even-odd use LINQ
ListView.Columns.Add("col1");
ListView.Columns.Add("col2");
int i = 0;

var result = source.GroupBy(s => i++ /2).Select(g => Array.Reverse(g.ToArray())).ToArray();

foreach(var g in result)
{
var arr= new string[];
foreach(var str in g)
{
arr.Add(str);

}

var item= new ListViewItem(arr);
ListView.Items.Add(item);

}
+1