ASP.NET防止Sql注入的解决方法

以下是代码片段：
parameterCheck.cs public class parameterCheck{
public static bool isEmail(string emailString){
return System.Text.RegularExpressions.Regex.IsMatch(emailString, "['/w_-]+(/.['/w_-]+)
*@['/w_-]+(/.['/w_-]+)*/.[a-zA-Z]{2,4}");
}
public static bool isInt(string intString){
return System.Text.RegularExpressions.Regex.IsMatch(intString ,"^(/d{5}-/d{4})|(/d{5})
 $");
}
public static bool isUSZip(string zipString){
return System.Text.RegularExpressions.Regex.IsMatch(zipString ,"^-[0-9]+ $|^[0-9]+ $");
}
}

以下是代码片段：
<appSettings>
<add key="safeParameters" value="OrderID-int32,CustomerEmail-email,ShippingZipcode-USzip" />
</appSettings>

以下是代码片段：
protected void Application_BeginRequest(Object sender, EventArgs e){
String[] safeParameters = System.Configuration.ConfigurationSettings.AppSettings
["safeParameters"].ToString().Split(',');
for(int i= 0 ;i < safeParameters.Length; i++){
String parameterName = safeParameters.Split('-')[0];
String parameterType = safeParameters.Split('-')[1];
isValidParameter(parameterName, parameterType);
}
}

public void isValidParameter(string parameterName, string parameterType){
string parameterValue = Request.QueryString[parameterName];
if(parameterValue == null) return;

if(parameterType.Equals("int32")){
if(!parameterCheck.isInt(parameterValue)) Response.Redirect("parameterError.aspx");
}
else if (parameterType.Equals("double")){
if(!parameterCheck.isDouble(parameterValue)) Response.Redirect("parameterError.aspx");
}
else if (parameterType.Equals("USzip")){
if(!parameterCheck.isUSZip(parameterValue)) Response.Redirect("parameterError.aspx");
}
else if (parameterType.Equals("email")){
if(!parameterCheck.isEmail(parameterValue)) Response.Redirect("parameterError.aspx");
}
}