C# Linq: Combine multiple .Where() with an *OR* clause

C# Linq: Combine multiple .Where() with an *OR* clause

To combine multiple .Where() clauses with an OR operator, you can use the || operator. Here's an example:

var result = data.Where(x => x.Property1 == value1 || x.Property2 == value2 || x.Property3 == value3);

In this example, the data variable is an IEnumerable of objects with properties Property1, Property2, and Property3. The result variable will contain all objects from data where either Property1, Property2, or Property3 has the corresponding value.

You can chain as many Where() clauses as needed with the || operator to create more complex conditions.

Examples

  1. "C# LINQ: Combine Two .Where() with OR"

    var query = data.Where(item => item.Property1 == value1 || item.Property2 == value2); // Code here demonstrates combining two .Where() clauses with an OR condition
    • Description: Illustrates combining two .Where() clauses using the || operator to create an OR condition.

  2. "C# LINQ: Combine Three .Where() with OR"

    var query = data.Where(item => item.Property1 == value1 || item.Property2 == value2 || item.Property3 == value3); // Code here demonstrates combining three .Where() clauses with an OR condition
    • Description: Shows how to combine three .Where() clauses using the || operator to create an OR condition.

  3. "C# LINQ: Combine .Where() with OR and AND"

    var query = data.Where(item => (item.Property1 == value1 || item.Property2 == value2) && item.Property3 == value3); // Code here demonstrates combining .Where() clauses with both OR and AND conditions
    • Description: Demonstrates combining .Where() clauses with both OR and AND conditions for more complex filtering.

  4. "C# LINQ: Combine .Where() with Multiple OR Conditions"

    var query = data.Where(item => item.Property1 == value1 || item.Property2 == value2 || item.Property3 == value3); // Code here demonstrates combining .Where() clauses with multiple OR conditions
    • Description: Illustrates combining .Where() clauses with multiple OR conditions for flexible filtering.

  5. "C# LINQ: Combine .Where() with OR and StringComparison"

    var query = data.Where(item => item.Name.Equals("John", StringComparison.OrdinalIgnoreCase) || item.Name.Equals("Doe", StringComparison.OrdinalIgnoreCase)); // Code here demonstrates combining .Where() clauses with OR and StringComparison for case-insensitive matching
    • Description: Shows how to combine .Where() clauses with OR conditions and StringComparison for case-insensitive matching.

  6. "C# LINQ: Combine .Where() with OR and Nullable Property"

    var query = data.Where(item => item.NullableProperty == null || item.NullableProperty == value); // Code here demonstrates combining .Where() clauses with OR and a nullable property
    • Description: Illustrates combining .Where() clauses with OR conditions and a nullable property.

  7. "C# LINQ: Combine .Where() with OR and DateTime Range"

    DateTime startDate = DateTime.Now.AddDays(-7); DateTime endDate = DateTime.Now; var query = data.Where(item => item.Date >= startDate || item.Date <= endDate); // Code here demonstrates combining .Where() clauses with OR for a DateTime range
    • Description: Demonstrates combining .Where() clauses with OR conditions for filtering within a DateTime range.

  8. "C# LINQ: Combine .Where() with OR and Collection Contains"

    var tagsToFilter = new List<string> { "Important", "Urgent" }; var query = data.Where(item => tagsToFilter.Contains(item.Tag1) || tagsToFilter.Contains(item.Tag2)); // Code here demonstrates combining .Where() clauses with OR and checking if a collection contains values
    • Description: Shows how to combine .Where() clauses with OR conditions and checking if a collection contains values.

  9. "C# LINQ: Combine .Where() with OR and Composite Key"

    var query = data.Where(item => (item.Property1 == value1 && item.Property2 == value2) || item.Property3 == value3); // Code here demonstrates combining .Where() clauses with OR and a composite key condition
    • Description: Illustrates combining .Where() clauses with OR conditions and a composite key condition.

  10. "C# LINQ: Combine .Where() with OR and Multiple Criteria"

    var query = data.Where(item => (item.Property1 == value1 && item.Property2 == value2) || (item.Property3 == value3 && item.Property4 == value4)); // Code here demonstrates combining .Where() clauses with OR and multiple criteria
    • Description: Demonstrates combining .Where() clauses with OR conditions and multiple criteria for complex filtering.

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