请帮忙写一正则表达式
字符串： <br/> UserName:  AV-6009034 <br/> Password:  61fxe72opj <br/> <br/> UserName:  AV-5974303 <br/> Password:  p9stc1r5vb <br/> <br/> UserName:  AV-6016790 <br/> Password:  95hh667r9a <br/> <br/>


希望得到的结果：
m.Groups[0].Value:

UserName: AV-6009034
Password: 61fxe72opj


m.Groups[1].Value:

UserName: AV-5974303
Password: p9stc1r5vb


................


[解决办法]
UserName:( ){2}(? <UserName> AV-\d{7})\ <br/\> +Password:( ){2}(? <Password> [\w\d]{10})
m.Group[ "UserName "]
m.Group[ "Password "]
[解决办法]
try

string test = " <br/> UserName:  AV-6009034 <br/> Password:  61fxe72opj <br/> <br/> UserName:  AV-5974303 <br/> Password:  p9stc1r5vb <br/> <br/> UserName:  AV-6016790 <br/> Password:  95hh667r9a <br/> <br/> ";
test = test.Replace( "  ", " ");
test = test.Replace( " <br/> ", "\n ");
MatchCollection mc = Regex.Matches(test, @ "UserName:\s+\S+\s*Password:\s+\S+ ", RegexOptions.IgnoreCase);
foreach (Match m in mc)
{
richTextBox2.Text += m.Value + "\n\n ";
}