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C# - Get Values from IEnumerable List (String) in C#, VB.NET

Feb 3, 2015
Introduction

Here I will explain how to get values from IEnumerable list or string individually in
c#, vb.net using as.npet. We can get values from IEnumerable list by using First() property or loop through the list to get respective element. IEnumerable list is a base for all collections and its having ability to loop through the collection by using current property, MoveNext and Reset methods in c#, vb.net.

Description:
  
In previous articles I explained convert datatable to IEnumerable list in c#,
convert datatable to json string in c#, convert datatable to generic list using LINQ, convert datatable to xml string in asp.net, convert datatable or dataset to array in asp.net and many articles relating to asp.net, c#, vb.net, jQuery and JavaScript and. Now I will explain how to get values from IEnumerable list individually in c#, vb.net using as.npet.

To get values from IEnumerable list individually in c#, vb.net we have different methods

Method 1:

If you want to get first elements from list we need to write the code like as shown below
C# Code


var data = dt.AsEnumerable().Select(row =>
new
{
UserId = row["UserId"].ToString(),
UserName = row["UserName"].ToString(),
Education = row["Education"].ToString()
});
var userid = data.First().UserId;
var username = data.First().UserName;
var education = data.First().Education;

VB.NET Code


Dim data = dt.AsEnumerable().[Select](Function(row) New With { _
Key .UserId = row("UserId").ToString(), _
Key .UserName = row("UserName").ToString(), _
Key .Education = row("Education").ToString() _
})
Dim userid = data.First().UserId
Dim username = data.First().UserName
Dim education = data.First().Education

Method 2:

If you want to get second or third or other elements we need to loop through list


var data = dt.AsEnumerable().Select(row =>
new
{
UserId = row["UserId"].ToString(),
UserName = row["UserName"].ToString(),
Education = row["Education"].ToString()
}).ToList();

string userid, username, education;
for (int i = 0; i < data.Count; i++)
{
userid=data[i].UserId.ToString();
username = data[i].UserName.ToString();
education = data[i].Education.ToString();
}

VB.NET Code


Dim data = dt.AsEnumerable().[Select](Function(row) New With { _
Key .UserId = row("UserId").ToString(), _
Key .UserName = row("UserName").ToString(), _
Key .Education = row("Education").ToString() _
}).ToList()
Dim userid As String, username As String, education As String
For i As Integer = 0 To data.Count - 1
userid = data(i).UserId.ToString()
username = data(i).UserName.ToString()
education = data(i).Education.ToString()
Next


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