I am using linq on datatable in vb.net. I want to pass multiple where condition and return total of data column. how should i do that ? here is related sql statment select sum (price) where saletype="L" and carttype ="0"
ADD Root Node to XML in C# add string data to IList collection Add strings to list and expiry each item in certain period of time add text file data into arraylist Add Text to a Textbox without removing previous text Add Two Large Numbers Using Strings - Without Use of BigInt Add user ...
How to: Filter Query Results by Using LINQ How to: Count, Sum, or Average Data by Using LINQ How to: Find the Minimum or Maximum Value in a Query Result by Using LINQ How to: Return a LINQ Query Result as a Specific Type Download PDF ...
) Console.ReadKey() End Sub Shared Sub SumColumn(ByVal lines As IEnumerable(Of String), ByVal col As Integer) ' This query performs two steps: ' split the string into a string array ' convert the specified element to ' integer and select it. Dim columnQuery = From line In lines...
.edmx File Overview Queries in LINQ to Entities Calling Functions in LINQ to Entities Queries Additional resources Training Module Use functionality in the .NET Class Library by calling methods that return values, accept input parameters, and more....
To create a project that contains sample data and types To run the samples in this topic, open Visual Studio and add a new Visual Basic Console Application project. Double-click the Module1.vb file created by Visual Basic. The samples in this topic use thePe...
How to Use Lambda Expressions in a Query var categories = from student in students group student by student.Year into studentGroup select new { GradeLevel = studentGroup.Key, TotalScore = studentGroup.Sum(s => s.ExamScores.Sum()) }; // Execute the query. foreach (var cat in ...
the Begin/End methods could be used in the following manner to perform the same operation asynchronously:Copy try { handler.BeginDoStuff(arg, iar => { try { Handler handler = (Handler)iar.AsyncState!; int i = handler.EndDoStuff(iar); Use(i); } catch (Exception e2) { ... // ...
Let's say we need to find "david" in table "friends" no matter its casing. "David" or "david" should both be found. Obviously, we could create an array containing all possible case combinations of "david" and then use the SQL 'IN' algorithms above. However, the number of combinations...
using System;using System.Linq;namespace MyApplication{class Program{staticvoidMain(string[]args){int[]arr=newint[]{1,2,3};intsum=arr.Sum();Console.WriteLine(sum);}}} Output: 6 Use theArray.foreachMethod to Sum Up Array of Integers inC# ...