If Edit1.Text cannot be converted, the default value of 0 will be usedįor floating point arithmetic, use StrToFloat() or StrToFloatDef() instead. If the value in Edit1.Text cannot be converted, an exception will be raised Convert Edit1.Text string to a number and assign to numeric type for math Math is done on numeric types, so for arithmetic, you'll need to use a function to convert the string values into numbers.įor Integer arithmetic, you can use StrToInt() or StrToIntDef(): var Or it could be from a String variable: Edit1.Text := myString This could be a String constant: Edit1.Text := 'hello' To set the value of a TEdit control, you simply assign a string to the Text property. You can assign it to a String variable with a simple assignment: var Display the value in the edit control to the user You can pass it into a function that expects a String constant: // Edit1 is the name of the TEdit control Since Text is a String property, you can treat it in your code as a String variable. To read and set the value of a TEdit control, you simply reference the Text property of the control.
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