dynamic sql query filtering on table on view in csharp

To dynamically filter a table or view in C# using SQL, you can use the DynamicParameters class from the Dapper library. Here's an example code snippet that demonstrates this:


main.cs
using Dapper;
using System.Data.SqlClient;

// declare your filter criteria
string filterColumn = "Name";
string filterValue = "John";

// create your SQL query with a dynamic parameter
string sql = $"SELECT * FROM MyTable WHERE {filterColumn} = @filterValue";

// set up your connection string and open a connection to the database
string connectionString = "Server=(localdb)\\mssqllocaldb;Database=MyDatabase;Trusted_Connection=True;";
using (SqlConnection connection = new SqlConnection(connectionString))
{
    // call Dapper's Query method with the dynamic parameters
    var results = connection.Query(sql, new { filterValue = filterValue });

    // process your results here...
}
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In this example, we're filtering a table called MyTable on the Name column, where we want to find all rows where the name value matches John. We're using the Dapper library to build a parameterized SQL query so we can dynamically set the filterValue parameter at runtime. The result is a collection of objects that match the filter criteria. You can modify the filter criteria and query to fit your needs.

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