Tag Archives: lists

Let the user drag pictures in a picture list in C#

The post Improve the picture list in C# showed how you can let the user add, remove ,and rearrange images in a picture list. To rearrange the list, the user right-clicks on a picture and selects Move Left or Move … Continue reading

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Improve the picture list in C#

My post Make a picture list in C# explained how you can make a picture list that lets the user add, remove, and rearrange pictures. This post adds a small improvement. The previous example displayed images in PictureBox controls with … Continue reading

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Make a picture list in C#

This example shows how to build a picture list that lets the user add, remove, and rearrange pictures at run time. If you right-click between two pictures or to the left or right of all of the pictures, the program … Continue reading

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Draw text wrapped to fit columns in C#

The post Draw aligned columns of data in C# shows one way to draw text in rows and columns. It uses the Graphics class’s MeasureString method to size the columns so they are big enough to display their data without … Continue reading

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Make extension methods that pick random items from arrays or lists in C#

This example uses a simple but useful technique to let you pick random items from arrays and lists. The following code defines RandomElement extension methods that pick random items. public static class ArrayExtensions { // The random number generator. private … Continue reading

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Determine whether two lists contain the same sequences of objects in different orders in C#

The SequenceEqual method determines whether two IEnumerable sequences contain the same objects in the same order. There is a simple way to determine whether the lists contain the same objects in different orders: sort the objects and then call SequenceEqual. … Continue reading

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Determine whether two lists contain the same sequences of objects in C#

The IEnumerable interface provides a SequenceEqual method that determines whether two IEnumerable sequences contain the same objects. Normally, it uses reference equality so it considers two objects equal only if they refer to the same instance. However, if the objects … Continue reading

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List Dictionary keys and values in C#

A Dictionary object’s Keys property is a KeyCollection containing the dictionary’s keys. Similarly, its Values property is a ValueCollection containing the dictionary’s values. These collections are slightly different from the List objects that you probably use in your code. In … Continue reading

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Make an owner-drawn ListBox that justifies columns in C#

This example shows how you can use an owner-drawn ListBox to left and right align values in columns. The following examples show different ways to align values in columns. Draw aligned columns of data in C# Format values in a … Continue reading

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Draw aligned columns of data in C#

This example draws a series of rows with aligned columns either left or right justified. The program uses the following code to define the data it will draw and the row and column alignments. // The values. private string[][] Values … Continue reading

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