How Can I Efficiently Convert Lists to DataTables in .NET?

<.> In the .NET, the list was converted into a data table

In the .NET development, converting generic lists into data tables is a common demand. The following is how to use FastMember to implement this operation:

Fastmember's meta -programming API optimized this process to achieve maximum performance. You can specify a specific member you want to include:

<code class="language-csharp">using FastMember;

IEnumerable<sometype> data = ...;
DataTable table = new DataTable();
using (var reader = ObjectReader.Create(data))
{
    table.Load(reader);
}</code>

Alternative method

<code class="language-csharp">using FastMember;

IEnumerable<sometype> data = ...;
DataTable table = new DataTable();
using (var reader = ObjectReader.Create(data, "Id", "Name", "Description"))
{
    table.Load(reader);
}</code>

reflection

In order to improve performance, you can enable Hyperdescriptor:

<code class="language-csharp">public static DataTable ToDataTable<T>(this IList<T> data)
{
    PropertyDescriptorCollection props =
        TypeDescriptor.GetProperties(typeof(T));
    DataTable table = new DataTable();
    for (int i = 0; i < props.Count; i++)
    {
        PropertyDescriptor prop = props[i];
        table.Columns.Add(prop.Name, prop.PropertyType);
    }
    foreach (T item in data)
    {
        DataRow row = table.NewRow();
        for (int i = 0; i < props.Count; i++)
        {
            PropertyDescriptor prop = props[i];
            row[i] = prop.GetValue(item);
        }
        table.Rows.Add(row);
    }
    return table;
}</code>

Please note that the above code fragments are for reference only, and the actual application may need to be adjusted according to the specific situation. The method to choose depends on your performance requirements and code complexity preferences. FastMember usually performs better in terms of performance, and the reflection method is easier to understand and maintain, but the performance may be lower.

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