Export Model to DataTable

Question

I want to convert my Model data to DataSet or DataTable (to export in excel format)

db.EMPs.ToList()

db

Answer 1

You can use ToDataTable extension method but you need to install MoreLinq first. To install MoreLINQ, run the following command in the Package Manager Console:

PM> Install-Package morelinq

Then add the following line to your using directives:

using MoreLinq;

And finally you can use ToDataTable extension method:

DataTable s = db.EMPs.ToDataTable();

Answer 2

Using MoreLinq is the best way to convert a class to DataTable as already answered by S.Akbari Below is another way I found to accomplish this by using System.Reflection

List<EMP> list= db.EMPs.ToList();
DataTable dt = new DataTable();       
PropertyInfo[] Props = typeof(EMP).GetProperties(BindingFlags.Public | BindingFlags.Instance);
foreach (PropertyInfo prop in Props)
{
    //Setting column names as Property names
    dt.Columns.Add(prop.Name);
}

foreach (EMP e in list)
{
    var values = new object[Props.Length];
    for (int i = 0; i < Props.Length; i++)
    {
        //inserting property values to datatable rows
        values[i] = Props[i].GetValue(e, null);
    }
    dt.Rows.Add(values);
}

Answer 3

To quickly create a file that can be read in Excel you could map the contents to a comma-separated value list using LINQ and then save the array to a file stream.

var records = db.EMP
                .ToList()
                .Select(record => $"\"{record.stringField}\",{record.numberField}")
                .ToArray();
File.WriteAllLines("file.csv", records);