ado.net - How to create a DataTable in C# and how to add rows?

Question

How do create a DataTable in C#?

I did like this:

 DataTable dt = new DataTable();
 dt.clear();
 dt.Columns.Add("Name");
 dt.Columns.Add("Marks");

How do I see the structure of DataTable?

Now I want to add ravi for Name and 500 for Marks. How can I do this?

Answer 1

Here's the code:

DataTable dt = new DataTable(); 
dt.Clear();
dt.Columns.Add("Name");
dt.Columns.Add("Marks");
DataRow _ravi = dt.NewRow();
_ravi["Name"] = "ravi";
_ravi["Marks"] = "500";
dt.Rows.Add(_ravi);

To see the structure, or rather I'd rephrase it as schema, you can export it to an XML file by doing the following.

To export only the schema/structure, do:

dt.WriteXMLSchema("dtSchemaOrStructure.xml");

Additionally, you can also export your data:

dt.WriteXML("dtDataxml");