C# – How to we uncheck a radio button

.netc++

I want to know how can we uncheck a radio button. It should work like a checkbox.

Best Solution

Use the following code to use radio button like check box.

    bool isChecked =false;
    private void radioButton1_CheckedChanged(object sender, EventArgs e)
    {
        isChecked = radioButton1.Checked;
    }

    private void radioButton1_Click(object sender, EventArgs e)
    {
        if (radioButton1.Checked && !isChecked)
            radioButton1.Checked = false;
        else
        {
            radioButton1.Checked = true;
            isChecked = false;
        }
    }

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An easy to understand and simple solution.

// Save today's date.
var today = DateTime.Today;

// Calculate the age.
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if (birthdate.Date > today.AddYears(-age)) age--;

However, this assumes you are looking for the western idea of the age and not using East Asian reckoning.

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Modify your constructor to the following so that it calls the base class constructor properly:

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{
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    {
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    }
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Note that a constructor is not something that you can call anytime within a method. That's the reason you're getting errors in your call in the constructor body.

Best Solution

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C# – How to calculate someone’s age based on a DateTime type birthday

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