用户控件之IPBox
IPBox小控件
public partial class UCIPBox : UserControl
{
public UCIPBox()
{
InitializeComponent();
}
private string _text = string.Empty;
private void textBox1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
MaskIpAddr(textBox1, e);
}
private void textBox2_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
MaskIpAddr(textBox2, e);
}
private void textBox3_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
MaskIpAddr(textBox3, e);
}
private void textBox4_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
MaskIpAddr(textBox4, e);
}
private void MaskIpAddr(System.Windows.Forms.TextBox textBox, KeyPressEventArgs e)
{
int len = textBox.Text.Length;
if (Char.IsDigit(e.KeyChar) || e.KeyChar == '.' || e.KeyChar == 8)
{
if (e.KeyChar != 8)
{
if (len == 2 && e.KeyChar != '.')
{
string tmp = textBox.Text + e.KeyChar;
if (textBox.Name == "textBox1")
{
if (Int32.Parse(tmp) > 223) // 进行验证
{
MessageBox.Show(tmp + " 不是一个有效项。请指定一个介于 1 和 223 之间的数值。");
textBox.Text = "223";
textBox.Focus();
return;
}
textBox2.Focus();
textBox2.SelectAll();
}
else if (textBox.Name == "textBox2")
{
if (Int32.Parse(tmp) > 255)
{
MessageBox.Show(tmp + " 不是一个有效项。请指定一个介于 1 和 255 之间的数值。");
textBox.Text = "255";
textBox.Focus();
return;
}
textBox3.Focus();
textBox3.SelectAll();
}
else if (textBox.Name == "textBox3")
{
if (Int32.Parse(tmp) > 255)
{
MessageBox.Show(tmp + " 不是一个有效项。请指定一个介于 1 和 255 之间的数值。");
textBox.Text = "255";
textBox.Focus();
return;
}
textBox4.Focus();
textBox4.SelectAll();
}
else if (textBox.Name == "textBox4")
{
if (Int32.Parse(tmp) > 255)
{
MessageBox.Show(tmp + " 不是一个有效项。请指定一个介于 1 和 255 之间的数值。");
textBox.Text = "255";
textBox.Focus();
return;
}
}
}
if (e.KeyChar == '.')
{
if (textBox.Name == "textBox1" && textBox.Text != "")
{
textBox2.Focus();
textBox2.SelectAll();
}
if (textBox.Name == "textBox2" && textBox.Text != "")
{
textBox3.Focus();
textBox3.SelectAll();
}
if (textBox.Name == "textBox3" && textBox.Text != "")
{
textBox4.Focus();
textBox4.SelectAll();
}
if (textBox.Name == "textBox4" && textBox.Text != "")
{
}
e.Handled = true;
}
}
else
{
if (textBox.Name == "textBox1" && textBox.Text == "")
{
}
if (textBox.Name == "textBox2" && textBox.Text == "")
{
textBox1.Focus();
textBox1.SelectionStart = textBox1.Text.Length;
}
if (textBox.Name == "textBox3" && textBox.Text == "")
{
textBox2.Focus();
textBox2.SelectionStart = textBox2.Text.Length;
}
if (textBox.Name == "textBox4" && textBox.Text == "")
{
textBox3.Focus();
textBox3.SelectionStart = textBox3.Text.Length;
}
e.Handled = false;
}
}
else
e.Handled = true;
}
[Bindable(true)]
// 获取/设置 IpBox 的文本。
public new string Text
{
get
{
if (textBox1.Text == ""
|| textBox2.Text == ""
|| textBox3.Text == ""
|| textBox4.Text == "")
{
_text = "";
return _text;
}
else
{
_text = Convert.ToInt32(textBox1.Text).ToString() + "." + Convert.ToInt32(textBox2.Text).ToString() + "." + Convert.ToInt32(textBox3.Text).ToString() + "." + Convert.ToInt32(textBox4.Text).ToString();
return _text;
}
}
set
{
string[] ips = value.Split('.');
if (ips.Count()>=4)
{
this.textBox1.Text = ips[0];
this.textBox2.Text = ips[1];
this.textBox3.Text = ips[2];
this.textBox4.Text = ips[3];
}
}
}
}