Get attribute value or throw exception : Attribute « XML « C# / C Sharp

1. C# / C Sharp
2. XML
3. Attribute

Get attribute value or throw exception

 

using System;
using System.Xml;


public class XmlUtil
{


    #region GetAttrib(XmlNode node, string attrib, string defVal)
    public static string GetAttrib(XmlNode node, string attrib, string defVal)
    {
        XmlAttribute xmlAttrib = node.Attributes[attrib];
        if (xmlAttrib == null)
            return defVal;

        string val = xmlAttrib.Value;
        return (val == null) ? defVal : val;
    }
    #endregion

    #region GetBoolAttrib(XmlNode node, string attrib, bool defVal)
    public static bool GetBoolAttrib(XmlNode node, string attrib, bool defVal)
    {
        XmlAttribute xmlAttrib = node.Attributes[attrib];
        if (xmlAttrib == null)
            return defVal;

        string val = xmlAttrib.Value;
        if (val == null || val == string.Empty)
            return defVal;

        bool returnVal = (val == "1" || val.ToLower() == "true");

        return returnVal;
    }
    #endregion

    #region GetBoolAttribOrThrow(XmlNode node, string attrib)
    public static bool GetBoolAttribOrThrow(XmlNode node, string attrib)
    {
        string val = GetAttrib(node, attrib, null);
        if (val == null)
            throw new Exception(String.Format("Attribute '{0}' not specified in node '{1}'", attrib, node.Name));

        if (val == null || val == string.Empty)
            return false;

        bool returnVal = (val == "1" || val.ToLower() == "true");

        return returnVal;
    }
    #endregion

    #region GetIntAttrib(XmlNode node, string attrib, int defVal)
    public static int GetIntAttrib(XmlNode node, string attrib, int defVal)
    {
        XmlAttribute xmlAttrib = node.Attributes[attrib];
        if (xmlAttrib == null)
            return defVal;

        string val = xmlAttrib.Value;
        if (val == null || val == string.Empty)
            return defVal;

        int returnVal = defVal;
        int.TryParse(val, out returnVal);

        return returnVal;
    }
    #endregion

    #region GetIntAttribOrThrow(XmlNode node, string attrib)
    public static int GetIntAttribOrThrow(XmlNode node, string attrib)
    {
        string val = GetAttrib(node, attrib, null);
        if (val == null)
            throw new Exception(String.Format("Attribute '{0}' not specified in node '{1}'", attrib, node.Name));

        if (val == null || val == string.Empty)
            return 0;

        int returnVal = 0;
        int.TryParse(val, out returnVal);

        return returnVal;
    }
    #endregion

    #region GetInt64Attrib(XmlNode node, string attrib, Int64 defVal)
    public static Int64 GetInt64Attrib(XmlNode node, string attrib, Int64 defVal)
    {
        XmlAttribute xmlAttrib = node.Attributes[attrib];
        if (xmlAttrib == null)
            return defVal;

        string val = xmlAttrib.Value;
        if (val == null || val == string.Empty)
            return defVal;

        Int64 returnVal = defVal;
        Int64.TryParse(val, out returnVal);

        return returnVal;
    }
    #endregion

    #region GetInt64AttribOrThrow(XmlNode node, string attrib)
    public static Int64 GetInt64AttribOrThrow(XmlNode node, string attrib)
    {
        string val = GetAttrib(node, attrib, null);
        if (val == null)
            throw new Exception(String.Format("Attribute '{0}' not specified in node '{1}'", attrib, node.Name));

        if (val == null || val == string.Empty)
            return 0;

        Int64 returnVal = 0;
        Int64.TryParse(val, out returnVal);

        return returnVal;
    }
    #endregion

}

   
  

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