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Troubleshooting Guide: Windows 11 Taskbar Not Showing - How to Fix It

  If your Windows 11 taskbar is not showing, you can try several troubleshooting steps to resolve the issue. Here are some potential solutions you can try:
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How to solve - The required column 'xxx' was not present in the results of a 'FromSql' operation in .net



 When you encounter the error message "The required column 'xxx' was not present in the results of a 'FromSql' operation" in .NET, it means that the column 'xxx' you're trying to access is not present in the result set returned by the SQL query executed using the FromSql method.

The FromSql method in .NET allows you to execute raw SQL queries and map the results to entities or objects. However, it relies on the columns in the result set matching the properties of the entity or object you're trying to map to. If a column is missing or its name doesn't match the corresponding property, you'll encounter this error.

Here are a few possible causes and solutions for this error:

  1. Column name mismatch: Ensure that the column name 'xxx' in your SQL query matches the property name in the entity or object you're trying to map the result to. Check for any typos or differences in case sensitivity.

  2. Missing column in the SQL query: Verify that the column 'xxx' is included in the SELECT statement of your SQL query. If it's missing, add it to the query so that it appears in the result set.

  3. Incorrect SQL query or table structure: Double-check your SQL query and ensure that the column 'xxx' is present in the table you're querying. If the column is missing, you may need to modify your table structure or query to include it.

  4. Entity or object mapping issue: If you're using an ORM (Object-Relational Mapping) framework like Entity Framework, make sure that the entity or object you're mapping the results to has a corresponding property for the 'xxx' column. Verify that the property name and type match the column in the result set.

By addressing any of the above issues, you should be able to resolve the "required column not present" error and successfully map the results of the SQL query to your desired entity or object.



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