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Efe Onah Ojobo
NA
32
5.8k
c#
Jun 25 2015 9:22 AM
i use these code to check for if a combobox and textbox is empty.
if(string.IsNullorWhiteSpace(textBox1.Text) && string.IsNullorEmpty(cmbcreditUnit.Text))
and it trigger is line of code.
listBox1.Items.Add(ComboBox1.SelectedItem);
by saying
Value cannot be Null,
Parameter name item.
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c#
On C# Viual Studio