How to find if all items in a list containing the selected color

Question

Hi
I'm using the code below to check what color the user has selected. This is only working when my item got one color. Now I would like to change my code so each item can have one or more colors (seperated by semicolon). I guess I have to use string.IndexOf but I don't know how to use it in the .Where scentence below to return all the items that got the selected color.

Thanks, Sigurd F

var sampleDataGroups = await SampleDataSource.GetGroupsAsync();

sampleDataGroups = sampleDataGroups.Where<SampleDataGroup>(Item => Item.Color == KeywordColorList.SelectedValue.ToString()).ToList();

Answer 1

If the Color property of the SampleDataGroup class contains a string with different colours separated by a semicolon you could use the following code to determine whether the KeywordColorList.SelectedValue property is amont these colours:

var sampleDataGroups = await SampleDataSource.GetGroupsAsync();

sampleDataGroups = sampleDataGroups.Where<SampleDataGroup>(Item => Item.Color.Split(';').Contains(KeywordColorList.SelectedValue.ToString())).ToList();

 

Compilable sample code:

            var sampleDataGroups = new List<SampleDataGroup> 
            {
                new SampleDataGroup { Color = "blue"},
                new SampleDataGroup { Color = "blue;red;green"},
                new SampleDataGroup { Color = "red;green"},
            };

            string selectedValue = "blue";

            sampleDataGroups = sampleDataGroups.Where<SampleDataGroup>(Item => Item.Color.Split(';').Contains(selectedValue)).ToList();

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Answer 2

Thanks a lot :-)

Regards, Sigurd F