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- {
- public partial class Form1 : Form
- {
- public Form1()
- {
- InitializeComponent();
- }
- /* public static bool isNumber(char arNummmer)
- {
- return char.IsNumber(arNummmer);
- }*/
- private bool langd(string str)
- {
- const int giltligLangd = 11;
- bool giltlig;
- if (str.Length == giltligLangd && str[7] == '-' || str[7] == '+')
- {
- giltlig = true;
- }
- else
- {
- giltlig = false;
- }
- return giltlig;
- }
- private void kontrollKnapp_Click(object sender, EventArgs e)
- {
- string nummerInmatning = inmatning.Text;
- if (!langd(nummerInmatning))
- {
- MessageBox.Show("Fel längd eller fel plats av skiljetecken");
- }
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