check multiple textboxes is emty oe not at a time

Murli Jadhav

My textBoxes Is contained on panel3 and panel3 is above on panel2

I want validate textboxes my code is

public void ClearTextBoxes(Control.ControlCollection cc)

{

foreach (Control ctrl in cc)

{

TextBox tb = ctrl as TextBox;

if (tb == null)

messagebox.show("Empty Textbox Found");

}

but It Throws an error -"Object refference not set an instance of an object"

2 Replies

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Murli Jadhav9y ago
#
Manikandan Murugesan It Is Not Work For Me Because all of my textboxes is on panels
0
Manikandan Murugesan9y ago
Sure -- enumerate through your controls looking for text boxes:
foreach (Control c in this.Controls)
{
    if (c is TextBox)
    {
        TextBox textBox = c as TextBox;
        if (textBox.Text == string.Empty)
        {
            // Text box is empty.
            // You COULD store information about this textbox is it's tag.
        }
    }
}
You have AND (&&), should be OR (||)
if (txtUserID.Text == String.Empty || txtFN.Text == String.Empty || txtMI.Text == String.Empty || txtLN.Text == String.Empty || txtUsername.Text == String.Empty || txtPassword.Text == String.Empty || txtConfirm.Text == String.Empty)
        {
            XtraMessageBox.Show("All fields are required!", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
        }
0