CODEWITHSUNDEEP
c#wpflinqdatagrid
user1281991
user1281991

Reputation: 773

C# Linq list with list in datagrid

I have a List containing a string property and another List. How can I in a datagrid display both the string property AND the properties from the containing List?

public class Main
{
    public string Name { get; set; }
    public List<Info> Info { get; set; }
}

public class Info
{
    public string Info1 { get; set; }
    public string Info2 { get; set; }
}

I would like my datagrid to show something like this:

 #Name    #Info1    #Info2
  name     info1     info2
  name     info1     info2

Thank you very much in advance.

Upvotes: 0

Views: 185

Answers (2)

Tim Schmelter
Tim Schmelter

Reputation: 460340

The static way if you can change the Main class is to provide string-properties of the properties in the other class that you want to expose:

public class Main
{
    public string Name { get; set; }
    public List<Info> Info { get; set; }
    public string Info1 { 
        get {
            return Info == null || Info.Count == 0 ? "" 
                : Info.Last().Info1; 
        } 
    }
    public string Info2
    {
        get
        {
            return Info == null || Info.Count == 0 ? ""
                : Info.Last().Info2;
        }
    }
}

Other approaches:

  • you could use a new class just for this requirement

  • you could use an anonymous type:

    this.dataGridView1.DataSource = mains
.Select(m => new { 
    m.Name, 
    Info1 = m.Info.Last().Info1,
    Info2 = m.Info.Last().Info2, // add null or count=0 check here
}).ToList();

Upvotes: 2

Magnus
Magnus

Reputation: 46997

If you want to take the last record from the Info list for each Main item you can write:

var q = from m in mainList
        let i = m.Info.LastOrDefault()
        select new
        {
            m.Name,
            Info1 = i == null ? null : i.Info1,
            Info2 = i == null ? null : i.Info2,
        };

Upvotes: 1

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