Check out example codes for "send type as argument c#". It will help you in understanding the concepts better.

Code Example 1

T GetColumnValue<T>(string columnName)
    // If you need the type, you can use typeof(T)...

Code Example 2

object GetColumnValue(string columnName, Type type)
    // Here, you can check specific types, as needed:

    if (type == typeof(int)) { // ...

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