How to get values from list items?

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I have four lists boxes with multiple selection.

list a,b,c,d;

i am getting its values by below code.

C#

string a = String.Join(",", listA.Items.OfType<ListItem>().Where(r => r.Selected).Select(r => r.Text));

string b = String.Join(",", listB.Items.OfType<ListItem>().Where(r => r.Selected).Select(r => r.Text));

string c = String.Join(",", listC.Items.OfType<ListItem>().Where(r => r.Selected).Select(r => r.Text));

string d = String.Join(",", listD.Items.OfType<ListItem>().Where(r => r.Selected).Select(r => r.Text));


string values=a+b+c+d;

My question is when i select values it result like.

,b,c,d OR
a,,c,d OR
a,b,c,

I need the result like

b,c,d OR
a,c,d
a,b,c

There are useless commas how we remove it.

What I have tried:

C#

<pre lang="C#">

string a = String.Join(&quot;,&quot;, listA.Items.OfType&lt;ListItem&gt;().Where(r =&gt; r.Selected).Select(r =&gt; r.Text));

string b = String.Join(&quot;,&quot;, listB.Items.OfType&lt;ListItem&gt;().Where(r =&gt; r.Selected).Select(r =&gt; r.Text));

string c = String.Join(&quot;,&quot;, listC.Items.OfType&lt;ListItem&gt;().Where(r =&gt; r.Selected).Select(r =&gt; r.Text));

string d = String.Join(&quot;,&quot;, listD.Items.OfType&lt;ListItem&gt;().Where(r =&gt; r.Selected).Select(r =&gt; r.Text));


string values=a+b+c+d;

</pre>

Posted 17-Oct-16 20:43pm

shaprpuff

Updated 17-Oct-16 21:57pm

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Comments

Suvendu Shekhar Giri 18-Oct-16 3:07am

so, is your question "How to remove trailing comma in a string?" ?

shaprpuff 18-Oct-16 3:23am

yes

Suvendu Shekhar Giri 18-Oct-16 3:29am

Please check the solution if it helps, otherwise let me know.

F-ES Sitecore 18-Oct-16 3:57am

As well as using TrimEnd you can also look to use the linq "Aggregate" command rather than Join which should avoid the comma being there in the first place. Google "c# linq aggregate" for examples.

2 solutions

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Karthik_Mahalingam · Answer 1 · 2016-10-17T21:57:00

Solution 2

try this

C#

string a = String.Join(",", listA.Items.OfType<ListItem>().Where(r => r.Selected && !string.IsNullOrWhiteSpace(r.Text)).Select(r => r.Text));

Posted 17-Oct-16 21:57pm

Karthik_Mahalingam

Suvendu Shekhar Giri · Answer 2 · 2016-10-17T21:28:00

Solution 1

You can use String.TrimEnd Method [^]

Something like -

C#

values = values.TrimEnd(',');

Hope, it helps :)

Posted 17-Oct-16 21:28pm

Suvendu Shekhar Giri