how to remove duplicate value from ARRAYLIST

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hello,

i have one arraylist wich contain values from different database but it stores some duplicate values so, i want to remove duplicate values and store only unique value in ARRay List.

So, how can this is achievable ?

Thanks in Advance...
Mitesh

Posted 29-Jun-12 20:58pm

Mits Machhi

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2 solutions

Solution 1

You can use a temporary container such as HashSet and adding all element to it. Finally copy the data of HashSet to ArrayList.

Cheers..

Posted 29-Jun-12 21:38pm

JakirBB

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Mits Machhi · Accepted Answer · 2012-06-30T00:58:00

Solution 2

ArrayList ar = new ArrayList();

for (int h = 0; h<ds1.Tables[0].Rows.Count; h++)
{
    if (!ar.Contains(ds1.Tables[0].Rows[h][0].ToString()))
    {
        ar.Add(Convert.ToString(ds1.Tables[0].Rows[h][0].ToString()));
    }
}

Posted 30-Jun-12 0:58am

Mits Machhi