Get value between two numbers using LINQ query

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Hi,

I need LINQ query value between two numbers.

But, my case is two number is different.

the comparison value data type is double.

finding the value in the column datatype is string(text)

i tried to convert ToDouble. But, it is not working.

Query below

MIN and MAX Value datatype is double Ex : 200 and 210

MY ABC column datatype is string(text) and value like "205","198","215"

C#

var Qry = (from r in tbl1.AsEnumerable()

where Convert.ToDouble(r.Field<string>("ABC")) >= Convert.ToDouble(Min_VALUE)
&& Convert.ToDouble(r.Field<string>("ABC")) >= Convert.ToDouble(Max_VALUE)
select new
{
A_VALUE = Convert.ToDouble(r.Field<string>("ABC")),
}).Count();

I want in between values from 200 and 210.

so the result is "205"

How to write the linq query for string and number..?

What I have tried:

MIN and MAX Value datatype is double Ex : 200 and 210

MY ABC column datatype is string(text) and value like "205","198","215"

C#

var Qry = (from r in tbl1.AsEnumerable()

                       where Convert.ToDouble(r.Field<string>("ABC")) >= Convert.ToDouble(Min_VALUE)
                             && Convert.ToDouble(r.Field<string>("ABC")) >= Convert.ToDouble(Max_VALUE)
                         select new
                         {
                             A_VALUE = Convert.ToDouble(r.Field<string>("ABC")),
                         }).Count();

Posted 26-May-17 3:05am

gani7787

Updated 27-May-17 23:41pm

Maciej Los

v2

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F-ES Sitecore · Answer 1 · 2017-05-26T03:14:00

You're comparing where ABC >= min and ABC >= max, so it will only be true for values >= max. I think you mean ABC >= min and ABC <= max

where Convert.ToDouble(r.Field<string>("ABC")) >= Convert.ToDouble(Min_VALUE)
                             && Convert.ToDouble(r.Field<string>("ABC")) <= Convert.ToDouble(Max_VALUE)

Maciej Los · Answer 2 · 2017-05-27T23:41:00

If i understand you well, you want to get in between value from the string-list of numbers. Check this:

C#

DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("ABC", typeof(string)));
dt.Rows.Add(new object[]{"205,198,215"});
dt.Rows.Add(new object[]{"105,198,315"});
dt.Rows.Add(new object[]{"405,298,215"});
dt.Rows.Add(new object[]{"305,398,315"});
dt.Rows.Add(new object[]{"305,298,415"});


var result = dt.AsEnumerable()
	.Select(x => new 
		{
			Text = x.Field<string>("ABC"),
			Numbers = x.Field<string>("ABC")
				.Split(new string[]{","}, StringSplitOptions.RemoveEmptyEntries)
				.Select(y => Convert.ToInt32(y))
				.ToList()
		})
	.Select(x => new
		{
			Text = x.Text,
			MinVal = x.Numbers.Min(),
			MaxVal = x.Numbers.Max(),
			InBetweenVal = x.Numbers.First(y => y>x.Numbers.Min() && y<x.Numbers.Max())
		})
	.ToList();

Console.WriteLine("Text\tMinVal\tMaxVal\tInBetweenVal");
foreach(var r in result)
{
	Console.WriteLine("{0}\t{1}\t{2}\t{3}", r.Text, r.MinVal, r.MaxVal, r.InBetweenVal);
}

Result:

Text        MinVal  MaxVal  InBetweenVal
205,198,215 198     215     205
105,198,315 105     315     198
405,298,215 215     405     298
305,398,315 305     398     315
305,298,415 298     415     305

Get value between two numbers using LINQ query

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