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Add copilot use case examples (#43241)
* Add copilot use case example * Update how-to-convert-a-string-to-a-number.md * Add metadata * Add GitHub Copilot usage scenario * Update parse-strings-using-split.md * Update example * update ms.date * Refine string splitting example in documentation * Updates * Add images * Add image * Fix image file path * Add image * Update docs/csharp/how-to/parse-strings-using-split.md Co-authored-by: Bill Wagner <[email protected]> * Create media folder * Move image file * Delete readme * Create media sub folder * Delete docs/csharp/programming-guide/types/media/how-to-convert-a-string-to-a-number * Create media subfolder * Move image file * Delete readme * Delete docs/media/github-copilot-chat-convert-string-to-number.png * Delete docs/media/github-copilot-chat-string-split.png * Fix image * fix image file path * Fix error * Fix error * Fix image source path in documentation --------- Co-authored-by: Bill Wagner <[email protected]>
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‎docs/csharp/how-to/media/parse-strings-using-split/github-copilot-chat-string-split.png‎

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‎docs/csharp/how-to/parse-strings-using-split.md‎

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---
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title: "Divide strings using String.Split"
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description: The Split method returns an array of strings split from a set of delimiters. It's an easy way to extract substrings from a string.
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ms.date: 03/06/2024
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ms.date: 10/31/2024
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helpviewer_keywords:
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- "splitting strings [C#]"
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- "Split method [C#]"
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- "strings [C#], splitting"
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- "parse strings"
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ms.assetid: 729c2923-4169-41c6-9c90-ef176c1e2953
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ms.custom: mvc
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ms.custom: mvc, vs-copilot-horizontal
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ms.collection: ce-skilling-ai-copilot
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---
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# How to separate strings using String.Split in C\#
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The <xref:System.String.Split%2A?displayProperty=nameWithType> method creates an array of substrings by splitting the input string based on one or more delimiters. This method is often the easiest way to separate a string on word boundaries. It's also used to split strings on other specific characters or strings.
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[!INCLUDE[interactive-note](~/includes/csharp-interactive-note.md)]
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## String.Split examples
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The following code splits a common phrase into an array of strings for each word.
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:::code language="csharp" interactive="try-dotnet-method" source="../../../samples/snippets/csharp/how-to/strings/ParseStringsUsingSplit.cs" id="Snippet1":::
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:::code language="csharp" interactive="try-dotnet-method" source="../../../samples/snippets/csharp/how-to/strings/ParseStringsUsingSplit.cs" id="Snippet5":::
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## Use GitHub Copilot to split a string
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You can use GitHub Copilot in your IDE to generate code to split strings using `String.Split` in C#.
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If you're using [Visual Studio 2022 version 17.8 or later](/visualstudio/releases/2022/release-notes), you can try the AI-driven [GitHub Copilot in Visual Studio](/visualstudio/ide/visual-studio-github-copilot-install-and-states) to generate code to split an input string into substrings based on one or more delimiters. Submit your question as a prompt in the Copilot chat window, as in the following example. You can also submit prompts using [inline chat](/visualstudio/ide/visual-studio-github-copilot-chat#ask-questions-in-the-inline-chat-view) in the editor window itself.
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> [!NOTE]
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> GitHub Copilot is powered by AI, so surprises and mistakes are possible. Make sure to verify any generated code or suggestions. For more information about the general use of GitHub Copilot, product impact, human oversight, and privacy, see [GitHub Copilot FAQs](https://github.com/features/copilot#faq).
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The following text shows an example prompt for Copilot Chat:
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> Generate C# code to use Split.String split a string into substrings. Input string is "You win some. You lose some." Delimiters are space and period. Provide example output.
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You can customize the prompt to use strings and delimiters per your requirements.
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You can use chat features, such as [slash commands, references to files, methods, or classes, and threads](/visualstudio/ide/copilot-chat-context), to set intent and get better answers with scoped context. For an existing file that's open in the IDE, you can prompt GitHub Copilot using inline chat with `/generate code to split string1 in #Filename by delimiter spaces`.
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The following output shows an example Copilot Chat response:
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```output
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Here is an example of how you can use the Split method in C# to split the string "You win some. You lose some." using space and period as delimiters:
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using System;
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class Program
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{
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static void Main()
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{
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string input = "You win some. You lose some.";
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char[] delimiters = new char[] { ' ', '.' };
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string[] substrings = input.Split(delimiters, StringSplitOptions.RemoveEmptyEntries);
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foreach (string substring in substrings)
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{
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Console.WriteLine(substring);
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}
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}
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}
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**Example Output**
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You
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win
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some
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You
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lose
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some
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```
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When Copilot returns a code block, the response includes options to copy the code, insert the code into a new file, or preview the code output.
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> [!NOTE]
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> Your results might be different from what's shown in the example responses. AI models are non-deterministic, which means that they can return different responses when asked the same question. This might be due to additional learning and adaption over time, language variation, changes in context, such as your chat history, and more.
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:::image type="content" source="./media/parse-strings-using-split/github-copilot-chat-string-split.png" alt-text="Screenshot that shows using GitHub Copilot Chat in Visual Studio to split a string into substrings." lightbox="./media/parse-strings-using-split/github-copilot-chat-string-split.png":::
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For more information, see:
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* [GitHub Copilot Trust Center](https://resources.github.com/copilot-trust-center/)
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* [GitHub Copilot in Visual Studio](/visualstudio/ide/visual-studio-github-copilot-install-and-states)
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* [GitHub Copilot in VS Code](https://code.visualstudio.com/docs/copilot/overview)
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## See also
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- [Extract elements from a string](../../standard/base-types/divide-up-strings.md)

‎docs/csharp/programming-guide/types/how-to-convert-a-string-to-a-number.md‎

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---
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title: "How to convert a string to a number"
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description: Learn how to convert a string to a number in C# by calling the Parse, TryParse, or Convert class methods.
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ms.date: 03/15/2024
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ms.date: 10/31/2024
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helpviewer_keywords:
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- "conversions [C#]"
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- "conversions [C#], string to int"
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- "converting strings to int [C#]"
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- "strings [C#], converting to int"
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ms.topic: how-to
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ms.collection: ce-skilling-ai-copilot
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ms.custom: vs-copilot-horizontal
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ms.assetid: 467b9979-86ee-4afd-b734-30299cda91e3
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adobe-target: true
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---
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The following example calls the <xref:System.Convert.ToInt32%28System.String%29?displayProperty=nameWithType> method to convert an input string to an [int](../../language-reference/builtin-types/integral-numeric-types.md). The example catches the two most common exceptions thrown by this method: <xref:System.FormatException> and <xref:System.OverflowException>. If the resulting number can be incremented without exceeding <xref:System.Int32.MaxValue?displayProperty=nameWithType>, the example adds 1 to the result and displays the output.
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[!code-csharp[Parsing with Convert methods](~/samples/snippets/csharp/programming-guide/string-to-number/convert/program.cs)]
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## Use GitHub Copilot to convert a string to a number
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You can use GitHub Copilot in your IDE to generate code to convert a string to a number in C#.
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If you're using [Visual Studio 2022 version 17.8 or later](/visualstudio/releases/2022/release-notes), you can try the AI-driven [GitHub Copilot in Visual Studio](/visualstudio/ide/visual-studio-github-copilot-install-and-states) to generate code to convert a string to a number. Submit your question as a prompt in the Copilot chat window, as in the following example. You can also submit prompts using [inline chat](/visualstudio/ide/visual-studio-github-copilot-chat#ask-questions-in-the-inline-chat-view) in the editor window itself.
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> [!NOTE]
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> GitHub Copilot is powered by AI, so surprises and mistakes are possible. Make sure to verify any generated code or suggestions. For more information about the general use of GitHub Copilot, product impact, human oversight, and privacy, see [GitHub Copilot FAQs](https://github.com/features/copilot#faq).
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The following text shows an example prompt for Copilot Chat:
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> Generate C# code to convert the string "123" to a number using TryParse. Provide example output.
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You can customize the prompt to use a string per your requirements.
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You can use chat features, such as [slash commands, references to files, methods, or classes, and threads](/visualstudio/ide/copilot-chat-context), to set intent and get better answers with scoped context. For an existing file that's open in the IDE, you can prompt GitHub Copilot using inline chat with `/generate code to convert the string string1 in #Filename to a number`.
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The following output shows an example Copilot Chat response:
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```output
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Here is a C# code snippet to convert the string "123" to a number using TryParse:
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using System;
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class Program
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{
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static void Main()
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{
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string numberString = "123";
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int number;
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bool success = int.TryParse(numberString, out number);
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if (success)
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{
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// Example output
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Console.WriteLine("The converted number is: " + number);
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}
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else
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{
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Console.WriteLine("Conversion failed.");
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}
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}
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}
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When you run this code, the output will be:
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The converted number is: 123
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```
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When Copilot returns a code block, the response includes options to copy the code, insert the code into a new file, or preview the code output.
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> [!NOTE]
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> Your results might be different from what's shown in the example responses. AI models are non-deterministic, which means that they can return different responses when asked the same question. This might be due to additional learning and adaption over time, language variation, changes in context, such as your chat history, and more.
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:::image type="content" source="./media/how-to-convert-a-string-to-a-number/github-copilot-chat-convert-string-to-number.png" alt-text="Screenshot that shows using GitHub Copilot Chat in Visual Studio to convert a string to a number." lightbox="./media/how-to-convert-a-string-to-a-number/github-copilot-chat-convert-string-to-number.png":::
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For more information, see:
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* [GitHub Copilot Trust Center](https://resources.github.com/copilot-trust-center/)
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* [GitHub Copilot in Visual Studio](/visualstudio/ide/visual-studio-github-copilot-install-and-states)
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* [GitHub Copilot in VS Code](https://code.visualstudio.com/docs/copilot/overview)

‎docs/csharp/programming-guide/types/media/how-to-convert-a-string-to-a-number/github-copilot-chat-convert-string-to-number.png‎

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