xmlprocess.cs

来自「c#常用类库大全」· CS 代码 · 共 603 行 · 第 1/2 页

                    xe.SetAttribute(strAttribute, strValue);
            }
            xn.AppendChild(xe);
            doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
        }
        catch { }
    }

    /// <summary>
    /// 插入一行数据
    /// </summary>
    /// <param name="strXmlPath">XML文件相对路径</param>
    /// <param name="Columns">要插入行的列名数组，如：string[] Columns = {"name","IsMarried"};</param>
    /// <param name="ColumnValue">要插入行每列的值数组，如：string[] ColumnValue={"XML大全","false"};</param>
    /// <returns>成功返回true,否则返回false</returns>
    public static bool WriteXmlByDataSet(string strXmlPath, string[] Columns, string[] ColumnValue)
    {
        try
        {
            //根据传入的XML路径得到.XSD的路径，两个文件放在同一个目录下
            string strXsdPath = strXmlPath.Substring(0, strXmlPath.IndexOf(".")) + ".xsd";
            DataSet ds = new DataSet();
            ds.ReadXmlSchema(GetXmlFullPath(strXsdPath)); //读XML架构，关系到列的数据类型
            ds.ReadXml(GetXmlFullPath(strXmlPath));
            DataTable dt = ds.Tables[0];
            DataRow newRow = dt.NewRow();                 //在原来的表格基础上创建新行
            for (int i = 0; i < Columns.Length; i++)      //循环给一行中的各个列赋值
            {
                newRow[Columns[i]] = ColumnValue[i];
            }
            dt.Rows.Add(newRow);
            dt.AcceptChanges();
            ds.AcceptChanges();
            ds.WriteXml(GetXmlFullPath(strXmlPath));
            return true;
        }
        catch (Exception)
        {
            return false;
        }
    }
    #endregion

    #region 修改数据
    /// <summary>
    /// 修改指定节点的数据
    /// </summary>
    /// <param name="node">节点</param>
    /// <param name="value">值</param>
    public void Update(string node, string value)
    {
        try
        {
            XmlDocument doc = XMLLoad();
            XmlNode xn = doc.SelectSingleNode(node);
            xn.InnerText = value;
            doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + XMLPath);
        }
        catch { }
    }

    /// <summary>
    /// 修改指定节点的数据
    /// </summary>
    /// <param name="path">路径</param>
    /// <param name="node">节点</param>
    /// <param name="value">值</param>
    /// 使用示列:
    /// XMLProsess.Insert(path, "/Node","Value")
    /// XMLProsess.Insert(path, "/Node","Value")
    public static void Update(string path, string node, string value)
    {
        try
        {
            XmlDocument doc = XMLLoad(path);
            XmlNode xn = doc.SelectSingleNode(node);
            xn.InnerText = value;
            doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
        }
        catch { }
    }

    /// <summary>
    /// 修改指定节点的属性值(静态)
    /// </summary>
    /// <param name="path">路径</param>
    /// <param name="node">节点</param>
    /// <param name="attribute">属性名，非空时修改该节点属性值，否则修改节点值</param>
    /// <param name="value">值</param>
    /// 使用示列:
    /// XMLProsess.Insert(path, "/Node", "", "Value")
    /// XMLProsess.Insert(path, "/Node", "Attribute", "Value")
    public static void Update(string path, string node, string attribute, string value)
    {
        try
        {
            XmlDocument doc = XMLLoad(path);
            XmlNode xn = doc.SelectSingleNode(node);
            XmlElement xe = (XmlElement)xn;
            if (attribute.Equals(""))
                xe.InnerText = value;
            else
                xe.SetAttribute(attribute, value);
            doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
        }
        catch { }
    }

    /// <summary>
    /// 更改符合条件的一条记录
    /// </summary>
    /// <param name="strXmlPath">XML文件路径</param>
    /// <param name="Columns">列名数组</param>
    /// <param name="ColumnValue">列值数组</param>
    /// <param name="strWhereColumnName">条件列名</param>
    /// <param name="strWhereColumnValue">条件列值</param>
    public static bool UpdateXmlRow(string strXmlPath, string[] Columns, string[] ColumnValue, string strWhereColumnName, string strWhereColumnValue)
    {
        try
        {
            string strXsdPath = strXmlPath.Substring(0, strXmlPath.IndexOf(".")) + ".xsd";
            DataSet ds = new DataSet();
            ds.ReadXmlSchema(GetXmlFullPath(strXsdPath));//读XML架构，关系到列的数据类型
            ds.ReadXml(GetXmlFullPath(strXmlPath));

            //先判断行数
            if (ds.Tables[0].Rows.Count > 0)
            {
                for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
                {
                    //如果当前记录为符合Where条件的记录
                    if (ds.Tables[0].Rows[i][strWhereColumnName].ToString().Trim().Equals(strWhereColumnValue))
                    {
                        //循环给找到行的各列赋新值
                        for (int j = 0; j < Columns.Length; j++)
                        {
                            ds.Tables[0].Rows[i][Columns[j]] = ColumnValue[j];
                        }
                        ds.AcceptChanges();                     //更新DataSet
                        ds.WriteXml(GetXmlFullPath(strXmlPath));//重新写入XML文件
                        return true;
                    }
                }

            }
            return false;
        }
        catch (Exception)
        {
            return false;
        }
    }
    #endregion

    #region 删除数据
    /// <summary>
    /// 删除节点值
    /// </summary>
    /// <param name="path">路径</param>
    /// <param name="node">节点</param>
    /// <param name="attribute">属性名，非空时删除该节点属性值，否则删除节点值</param>
    /// <param name="value">值</param>
    /// 使用示列:
    /// XMLProsess.Delete(path, "/Node", "")
    /// XMLProsess.Delete(path, "/Node", "Attribute")
    public static void Delete(string path, string node)
    {
        try
        {
            XmlDocument doc = XMLLoad(path);
            XmlNode xn = doc.SelectSingleNode(node);
            xn.ParentNode.RemoveChild(xn);
            doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
        }
        catch { }
    }

    /// <summary>
    /// 删除数据
    /// </summary>
    /// <param name="path">路径</param>
    /// <param name="node">节点</param>
    /// <param name="attribute">属性名，非空时删除该节点属性值，否则删除节点值</param>
    /// <param name="value">值</param>
    /// 使用示列:
    /// XMLProsess.Delete(path, "/Node", "")
    /// XMLProsess.Delete(path, "/Node", "Attribute")
    public static void Delete(string path, string node, string attribute)
    {
        try
        {
            XmlDocument doc = XMLLoad(path);
            XmlNode xn = doc.SelectSingleNode(node);
            XmlElement xe = (XmlElement)xn;
            if (attribute.Equals(""))
                xn.ParentNode.RemoveChild(xn);
            else
                xe.RemoveAttribute(attribute);
            doc.Save(AppDomain.CurrentDomain.BaseDirectory.ToString() + path);
        }
        catch { }
    }

    /// <summary>
    /// 删除所有行
    /// </summary>
    /// <param name="strXmlPath">XML路径</param>
    public static bool DeleteXmlAllRows(string strXmlPath)
    {
        try
        {
            DataSet ds = new DataSet();
            ds.ReadXml(GetXmlFullPath(strXmlPath));
            if (ds.Tables[0].Rows.Count > 0)
            {
                ds.Tables[0].Rows.Clear();
            }
            ds.WriteXml(GetXmlFullPath(strXmlPath));
            return true;
        }
        catch (Exception)
        {
            return false;
        }
    }

    /// <summary>
    /// 通过删除DataSet中指定索引行，重写XML以实现删除指定行
    /// </summary>
    /// <param name="iDeleteRow">要删除的行在DataSet中的Index值</param>
    public static bool DeleteXmlRowByIndex(string strXmlPath, int iDeleteRow)
    {
        try
        {
            DataSet ds = new DataSet();
            ds.ReadXml(GetXmlFullPath(strXmlPath));
            if (ds.Tables[0].Rows.Count > 0)
            {
                ds.Tables[0].Rows[iDeleteRow].Delete();
            }
            ds.WriteXml(GetXmlFullPath(strXmlPath));
            return true;
        }
        catch (Exception)
        {
            return false;
        }
    }

    /// <summary>
    /// 删除指定列中指定值的行
    /// </summary>
    /// <param name="strXmlPath">XML相对路径</param>
    /// <param name="strColumn">列名</param>
    /// <param name="ColumnValue">指定值</param>
    public static bool DeleteXmlRows(string strXmlPath, string strColumn, string[] ColumnValue)
    {
        try
        {
            DataSet ds = new DataSet();
            ds.ReadXml(GetXmlFullPath(strXmlPath));
            if (ds.Tables[0].Rows.Count > 0)
            {
                //判断行多还是删除的值多，多的for循环放在里面
                if (ColumnValue.Length > ds.Tables[0].Rows.Count)
                {
                    for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
                    {
                        for (int j = 0; j < ColumnValue.Length; j++)
                        {
                            if (ds.Tables[0].Rows[i][strColumn].ToString().Trim().Equals(ColumnValue[j]))
                            {
                                ds.Tables[0].Rows[i].Delete();
                            }
                        }
                    }
                }
                else
                {
                    for (int j = 0; j < ColumnValue.Length; j++)
                    {
                        for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
                        {
                            if (ds.Tables[0].Rows[i][strColumn].ToString().Trim().Equals(ColumnValue[j]))
                            {
                                ds.Tables[0].Rows[i].Delete();
                            }
                        }
                    }
                }
                ds.WriteXml(GetXmlFullPath(strXmlPath));
            }
            return true;
        }
        catch (Exception)
        {
            return false;
        }
    }
    #endregion
}