Dynamic linQ on string array

Question

I have a string array like this.

string[] ColumnArray = new string[] { First story, second data , third way };

Following is the linQ query on this array.

string query = (from x in ColumnArray 
                           where x.Contains("Story")
                            select x).First();

But sometimes the query will be like this.

string query = (from x in ColumnArray 
                         where ( x.Contains("Story") || x.Contains("View"))
                         select x).First();

That condition should add dynamically. SO how the dynamic LinQ can helps here.

I have written something like this.

string dynamiccondition= // some condition.

 var query = (from x in ColumnArray.AsEnumerable().AsQueryable().Where(dynamiccondition).Select(x));

// but this is not working.

Any suggestion?

what condition you try? What you meant not working? it raise exception or not filter? — Grundy
– Grundy, Commented Jan 29, 2014 at 13:57
condition may be something like this string dynamiccondition = "x.Contains('Story') || x.Contains('view')"; -- > but I am not sure how to write dynamic linQ on string array. What i need is to get the string which contain any of these values(I need to make the condition using dynamic linQ) . — Dev
– Dev, Commented Jan 29, 2014 at 14:15

Grundy · Accepted Answer · 2014-01-29 14:21:52Z

1

In DynamicLINQ you can use logical operation like AND(&&) and OR(||), so try something like this

string dynamiccondition="it.Contains(\"Story\") OR it.Contains(\"View\")"

var query = ColumnArray.AsQueryable()
                       .Where(dynamiccondition);

answered Jan 29, 2014 at 14:21

Grundy

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