This is a class that I created in order to make it easier and quicker when getting things from the querystring and form items.
public static class QueryStringFormLibrary
{
#region Querystrings
/// <summary>
/// Returns the value from the querystring if it exists if not returns the default value
/// </summary>
/// <param name="queryName">Querystring item to get</param>
/// <param name="defaultValue">Default Value</param>
/// <returns></returns>
public static string getQuerystring(string queryName, string defaultValue)
{
string returnvalue = defaultValue;
if (!string.IsNullOrEmpty(HttpContext.Current.Request.QueryString.Get(queryName)))
{
returnvalue = HttpContext.Current.Request.QueryString.Get(queryName);
}
return returnvalue;
}
/// <summary>
/// Returns the value from the querystring if it exists if not returns the default value
/// </summary>
/// <param name="queryName">Querystring item to get</param>
/// <param name="defaultValue">Default Value</param>
/// <returns></returns>
public static int getQuerystring(string queryName, int defaultValue)
{
int returnvalue = defaultValue;
string currentValue = getQuerystring(queryName, "");
string pattern = "^(\\d){1,}$";
Regex rx = new Regex(pattern);
if (rx.Match(currentValue).Success)
{
returnvalue = int.Parse(currentValue);
}
return returnvalue;
}
/// <summary>
/// Returns the value from the querystring if it exists if not returns the default value
/// </summary>
/// <param name="queryName">Querystring item to get</param>
/// <param name="defaultValue">Default Value</param>
/// <returns></returns>
public static float getQuerystring(string queryName, float defaultValue)
{
float returnvalue = defaultValue;
string currentValue = getQuerystring(queryName, "");
string pattern = "^(\\d){1,}(\\.){0,1}(\\d){0,}$";
Regex rx = new Regex(pattern);
if (rx.Match(currentValue).Success)
{
returnvalue = float.Parse(currentValue);
}
return returnvalue;
}
/// <summary>
/// Returns the value from the querystring if it exists if not returns the default value
/// </summary>
/// <param name="queryName">Querystring item to get</param>
/// <param name="defaultValue">Default Value</param>
/// <returns></returns>
public static bool getQuerystring(string queryName, bool defaultValue)
{
bool returnvalue = defaultValue;
switch (getQuerystring(queryName, "false").ToLower())
{
case "t":
case "1":
case "on":
case "true":
returnvalue = true;
break;
default:
returnvalue = false;
break;
}
return returnvalue;
}
#endregion
#region Form
/// <summary>
/// Returns the value from the FormItem if it exists if not returns the default value
/// </summary>
/// <param name="formItemName">FormItem item to get</param>
/// <param name="defaultValue">Default Value</param>
/// <returns></returns>
public static string getFormItem(string formItemName, string defaultValue)
{
string returnvalue = defaultValue;
if (!string.IsNullOrEmpty(HttpContext.Current.Request.Form.Get(formItemName)))
{
returnvalue = HttpContext.Current.Request.Form.Get(formItemName);
}
return returnvalue;
}
/// <summary>
/// Returns the value from the FormItem if it exists if not returns the default value
/// </summary>
/// <param name="formItemName">FormItem item to get</param>
/// <param name="defaultValue">Default Value</param>
/// <returns></returns>
public static int getFormItem(string formItemName, int defaultValue)
{
int returnvalue = defaultValue;
string currentValue = getFormItem(formItemName, "");
string pattern = "^(\\d){1,}$";
Regex rx = new Regex(pattern);
if (rx.Match(currentValue).Success)
{
returnvalue = int.Parse(currentValue);
}
return returnvalue;
}
/// <summary>
/// Returns the value from the FormItem if it exists if not returns the default value
/// </summary>
/// <param name="formItemName">FormItem item to get</param>
/// <param name="defaultValue">Default Value</param>
/// <returns></returns>
public static float getFormItem(string formItemName, float defaultValue)
{
float returnvalue = defaultValue;
string currentValue = getFormItem(formItemName, "");
string pattern = "^(\\d){1,}(\\.){0,1}(\\d){0,}$";
Regex rx = new Regex(pattern);
if (rx.Match(currentValue).Success)
{
returnvalue = float.Parse(currentValue);
}
return returnvalue;
}
/// <summary>
/// Returns the value from the FormItem if it exists if not returns the default value
/// </summary>
/// <param name="formItemName">FormItem item to get</param>
/// <param name="defaultValue">Default Value</param>
/// <returns></returns>
public static bool getFormItem(string formItemName, bool defaultValue)
{
bool returnvalue = defaultValue;
switch (getFormItem(formItemName, "false").ToLower())
{
case "t":
case "1":
case "on":
case "true":
returnvalue = true;
break;
default:
returnvalue = false;
break;
}
return returnvalue;
}
#endregion
/// <summary>
/// Checks to see if the querystring has a value
/// </summary>
/// <param name="queryName">querystring to check</param>
/// <returns></returns>
public static bool hasQuerystring(string queryName)
{
bool returnvalue = false;
if (!string.IsNullOrEmpty(getQuerystring(queryName, "")))
{
returnvalue = true;
}
return returnvalue;
}
/// <summary>
/// Checks to see if the form item has a value
/// </summary>
/// <param name="formItemName">form item to check</param>
/// <returns></returns>
public static bool hasFormItem(string formItemName)
{
bool returnvalue = false;
if (!string.IsNullOrEmpty(getFormItem(formItemName, "")))
{
returnvalue = true;
}
return returnvalue;
}
}
