using visual basic i have to

If it is less than 1000, a Critical-style message box should be displayed indicating the error.

The error text should read: Base rent must be 1000 or higher, the box title should say Input Error and the button should be OK.

If the rent is non-numeric, a Critical-style message box should be displayed indicating the error.

The error text should read: Base rent must be a number, the box title should say Input Error and the button should be OK.

I got it to work howwver when i input letters and i close the message box that comes up it takes me back to my code i have attached the code below. How can i fix it so it doesnt take me back to mt code whwn closing the message box of no letters allowed

e Private Sub btnCalculate_Click(sender As Object, e As EventArgs) Handles btnCalculate.click Base rent must be written in Numbers If Not Ishumeric(txtBaseRent.Text) Then IblRent Result.Text = "Error IblDepositResult.Text = "Error MessageBox.Show("Base rent must be a number", "Input Error MessageBoxButtons.ok, Message Box Icon.Warning) "Creat End If If txtBaseRent. Text