C# inputBox文字输入对话框，类似delphi的inputBox

//inputbox输入函数 by 闫磊 Email:Landgis@126.com,yanleigis@21cn.com 2007.10.10
private string InputBox(string Caption, string Hint, string Default)
{
Form InputForm = new Form();
InputForm.MinimizeBox = false;
InputForm.MaximizeBox = false;
InputForm.StartPosition = FormStartPosition.CenterScreen;
InputForm.Width = 220;
InputForm.Height = 150;
//InputForm.Font.Name = "宋体";
//InputForm.Font.Size = 10;

InputForm.Text = Caption;
Label lbl = new Label();
lbl.Text = Hint;
lbl.Left = 10;
lbl.Top = 20;
lbl.Parent = InputForm;
lbl.AutoSize = true;

TextBox tb = new TextBox();
tb.Left = 30;
tb.Top = 45;
tb.Width = 160;
tb.Parent = InputForm;
tb.Text = Default;
tb.SelectAll();

Button btnok = new Button();
btnok.Left = 30;
btnok.Top = 80;
btnok.Parent = InputForm;
btnok.Text = "确定";
InputForm.AcceptButton = btnok;//回车响应
btnok.DialogResult = DialogResult.OK;

Button btncancal = new Button();
btncancal.Left = 120;
btncancal.Top = 80;
btncancal.Parent = InputForm;
btncancal.Text = "取消";
btncancal.DialogResult = DialogResult.Cancel;
try
{
if (InputForm.ShowDialog() == DialogResult.OK)
{
return tb.Text;
}
else
{
return null;
}
}
finally
{
InputForm.Dispose();
}
}