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If otherwise error " The <= operator can not be applied to operands of type "TextBox" and "int")

May 23, 2022

I have just started programming and have an error that I can not fix.

If otherwise error " The <= operator can not be applied to operands of
type "TextBox" and "int").

private void bn_CocaCola_Click(object sender, EventArgs e)
    {
        int GetränkeWert = 2;

    if (tbh_GeldAs <= GetränkeWert)
    {
        tbh_GeldAs.Text = ("Endnehmen sie Ihr Getränk");
    }
    else
    {
        tbh_GeldAs >= GetränkeWert;
        tbh_GeldAs.Text = ("Sie müssen Geld einzahlen");
    }
}

>Solution :

Error messages are there to help us so try to look at what it is telling you. I looked at the error message in your post and it states that your expression…

tbh_GeldAs <= GetränkeWert

is a comparison of these types.

TextBox <= int.

So what is a textbox? It holds some text but you have to look at the Textbox.Text property.

tbh_GeldAs.Text <= GetränkeWert

But now this is comparing a string like "123" to an int and it still doesn’t work! You need to change that string to a number.

Try:

Convert.ToInt32(tbh_GeldAs.Text) <= GetränkeWert

And while I hope this solves your problem, my real answer is to take the time to look at the error message and see what it’s saying because they are usually quite helpful.