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Avoid Duplicate value .

Avoid Duplicate value .

5y862Learn iOS Programming

This is my code get subcatgeory Name in list it's working fie.But i have face a problem showing duplicate value in list

For e.g. Subcategory name Drills -Drills show 5 time . I want to show only once .

@{ int counter = 0;

foreach (var item in @Model)

{

if (counter == 0)

{

@item.SubCategory

}

else

{

@item.SubCategory

}

counter = counter + 1;

}

}

3 Replies

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Jenith Thakkar5y ago
Accepted answer
Add your modal value in saprate list then apply distinct on that list and show value of that list only
list str =new List()
foreach(var i....)
{
str.Add(i.subcat...)
}

......
.....
.....
in counter use that str like
foreach(var i in str.distinct())
{
.....
@i
}

Thank you
Jignesh Kumar5y ago
Hi Sourabh,

Please check at where you are getting subcategory list and use distinct on that list so it will resolved your issue.
Here you are usinf forech so it will loop through your model and will so how many time you have in that list.
Sachin Singh5y ago
use Distinct() method while returning List and override IEquatable , cause Distinct doesn't work with reference types.
public class SubCategory: IEquatable
{
    public int Id{ get; set; }
    public string Name{ get; set; }

    public bool Equals(SubCategory sub)
    {
        if (Id== sub.Id&& Name== sub.Name)
            return true;

        return false;
    }

    public override int GetHashCode()
    {
        int hashId = Id== null ? 0 : Id.GetHashCode();
        int hashName = Name== null ? 0 : Name.GetHashCode();

        return Id^ Name;
    }
}