引用网上的 XMLHelper 地址 ：https://www.cnblogs.com/chnboy/archive/2009/04/02/1427652.html
稍做修改
using System; using System.Linq; using System.Xml; namespace FormTest { /// <summary> /// XMLHelper XML文档操作管理器 /// </summary> public class XMLHelper { public XMLHelper() { // // TODO: 在此处添加构造函数逻辑 // } #region XML文档节点查询和读取 /// <summary> /// 选择匹配XPath表达式的第一个节点XmlNode. /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名")</param> /// <returns>返回XmlNode</returns> public static XmlNode GetXmlNodeByXpath(string xmlFileName, string xpath) { XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); return xmlNode; } catch (Exception ex) { return null; //throw ex; //这里可以定义你自己的异常处理 } } /// <summary> /// 选择匹配XPath表达式的节点列表XmlNodeList. /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名")</param> /// <returns>返回XmlNodeList</returns> public static XmlNodeList GetXmlNodeListByXpath(string xmlFileName, string xpath) { XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNodeList xmlNodeList = xmlDoc.SelectNodes(xpath); return xmlNodeList; } catch (Exception ex) { return null; //throw ex; //这里可以定义你自己的异常处理 } } /// <summary> /// 选择匹配XPath表达式的第一个节点的匹配xmlAttributeName的属性XmlAttribute. /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param> /// <param name="xmlAttributeName">要匹配xmlAttributeName的属性名称</param> /// <returns>返回xmlAttributeName</returns> public static XmlAttribute GetXmlAttribute(string xmlFileName, string xpath, string xmlAttributeName) { string content = string.Empty; XmlDocument xmlDoc = new XmlDocument(); XmlAttribute xmlAttribute = null; try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); if (xmlNode != null) { if (xmlNode.Attributes.Count > 0) { xmlAttribute = xmlNode.Attributes[xmlAttributeName]; } } } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return xmlAttribute; } /// <summary> /// 选择匹配XPath表达式的第一个节点的匹配xmlAttributeName的属性XmlAttribute. /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param> /// <param name="name">要匹配xmlAttributeName的属性的子节点名称</param> /// <param name="xmlAttributeName">要匹配xmlAttributeName的属性名称</param> /// <param name="xmlAttributeValues">要匹配xmlAttributeName的属性值</param> /// <returns>返回xmlAttributeName的属性的子节点名称InnerText</returns> public static string GetXmlByAttribute(string xmlFileName, string xpath, string name, string xmlAttributeName, string xmlAttributeValues) { string content = string.Empty; XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 //主要 XmlNodeList xlist = xmlDoc.SelectNodes(xpath); XmlNode xmlNode = xlist.Cast<XmlNode>().Where(o => o.Attributes.Cast<XmlAttribute>().FirstOrDefault(a => a.Name == xmlAttributeName && a.Value == xmlAttributeValues) != null).FirstOrDefault(); //XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); if (xmlNode != null) { foreach (XmlNode node in xmlNode.ChildNodes) { if (node.Name.ToLower() == name.ToLower()) { //存在此节点则返回InnerText content = node.InnerText; break; } } } } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return content; } /// <summary> /// 选择匹配XPath表达式的第一个节点的匹配xmlAttributeName的属性XmlAttribute. /// </summary> /// <param name="xmlFileName"></param> /// <param name="xpath"></param> /// <param name="xmlAttributeName">要匹配xmlAttributeName的属性名称</param> /// <param name="xmlAttributeValues">要匹配xmlAttributeName的属性值</param> /// <returns>返回节点InnerText</returns> public static string GetXmlByAttribute(string xmlFileName, string xpath, string xmlAttributeName, string xmlAttributeValues) { string content = string.Empty; XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 //主要 XmlNodeList xlist = xmlDoc.SelectNodes(xpath); XmlNode xmlNode = xlist.Cast<XmlNode>().Where(o => o.Attributes.Cast<XmlAttribute>().FirstOrDefault(a => a.Name == xmlAttributeName && a.Value == xmlAttributeValues) != null).FirstOrDefault(); //XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); if (xmlNode != null) { content = xmlNode.InnerText; } } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return content; } #endregion #region XML文档创建和节点或属性的添加、修改 /// <summary> /// 创建一个XML文档 /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="rootNodeName">XML文档根节点名称(须指定一个根节点名称)</param> /// <param name="version">XML文档版本号(必须为:"1.0")</param> /// <param name="encoding">XML文档编码方式</param> /// <param name="standalone">该值必须是"yes"或"no",如果为null,Save方法不在XML声明上写出独立属性</param> /// <returns>成功返回true,失败返回false</returns> public static bool CreateXmlDocument(string xmlFileName, string rootNodeName, string version, string encoding, string standalone) { bool isSuccess = false; try { XmlDocument xmlDoc = new XmlDocument(); XmlDeclaration xmlDeclaration = xmlDoc.CreateXmlDeclaration(version, encoding, standalone); XmlNode root = xmlDoc.CreateElement(rootNodeName); xmlDoc.AppendChild(xmlDeclaration); xmlDoc.AppendChild(root); xmlDoc.Save(xmlFileName); isSuccess = true; } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return isSuccess; } /// <summary> /// 依据匹配XPath表达式的第一个节点来创建它的子节点(如果此节点已存在则追加一个新的同名节点 /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param> /// <param name="xmlNodeName">要匹配xmlNodeName的节点名称</param> /// <param name="innerText">节点文本值</param> /// <param name="xmlAttributeName">要匹配xmlAttributeName的属性名称</param> /// <param name="value">属性值</param> /// <returns>成功返回true,失败返回false</returns> public static bool CreateXmlNodeByXPath(string xmlFileName, string xpath, string xmlNodeName, string innerText, string xmlAttributeName, string value) { bool isSuccess = false; XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); if (xmlNode != null) { //存不存在此节点都创建 XmlElement subElement = xmlDoc.CreateElement(xmlNodeName); subElement.InnerXml = innerText; //如果属性和值参数都不为空则在此新节点上新增属性 if (!string.IsNullOrEmpty(xmlAttributeName) && !string.IsNullOrEmpty(value)) { XmlAttribute xmlAttribute = xmlDoc.CreateAttribute(xmlAttributeName); xmlAttribute.Value = value; subElement.Attributes.Append(xmlAttribute); } xmlNode.AppendChild(subElement); } xmlDoc.Save(xmlFileName); //保存到XML文档 isSuccess = true; } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return isSuccess; } /// <summary> /// 依据匹配XPath表达式的第一个节点来创建或更新它的子节点(如果节点存在则更新,不存在则创建) /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param> /// <param name="xmlNodeName">要匹配xmlNodeName的节点名称</param> /// <param name="innerText">节点文本值</param> /// <returns>成功返回true,失败返回false</returns> public static bool CreateOrUpdateXmlNodeByXPath(string xmlFileName, string xpath, string xmlNodeName, string innerText) { bool isSuccess = false; bool isExistsNode = false;//标识节点是否存在 XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 //XmlNodeList xlist = xmlDoc.SelectNodes(xpath); //XmlNode xmlNode = xlist.Cast<XmlNode>().Where(o => o.InnerText == innerText).FirstOrDefault(); XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); if (xmlNode != null) { //遍历xpath节点下的所有子节点 foreach (XmlNode node in xmlNode.ChildNodes) { //XmlAttribute att = node.Attributes.Cast<XmlAttribute>().Where(o => o.Name == innerText).FirstOrDefault(); if (node.Name.ToLower() == xmlNodeName.ToLower()) { //存在此节点则更新 node.InnerXml = innerText; isExistsNode = true; break; } } if (!isExistsNode) { //不存在此节点则创建 XmlElement subElement = xmlDoc.CreateElement(xmlNodeName); subElement.InnerXml = innerText; xmlNode.AppendChild(subElement); } } xmlDoc.Save(xmlFileName); //保存到XML文档 isSuccess = true; } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return isSuccess; } /// <summary> /// 依据匹配XPath表达式的第一个节点来创建或更新它的子节点(如果节点存在则更新,不存在则创建) /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param> /// <param name="xmlNodeName">要匹配xmlNodeName的节点名称</param> /// <param name="innerText">节点文本值</param> /// <returns>成功返回true,失败返回false</returns> public static bool CreateOrUpdateXmlNodeByXPath(string xmlFileName, string xpath, string xmlNodeName, string innerText, string XmlAttributeName, string XmlAttributeValues) { bool isSuccess = false; bool isExistsNode = false;//标识节点是否存在 XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); if (xmlNode != null) { //遍历xpath节点下的所有子节点 foreach (XmlNode node in xmlNode.ChildNodes) { XmlAttribute att = node.Attributes.Cast<XmlAttribute>().Where(o => o.Name == XmlAttributeName && o.Value == XmlAttributeValues).FirstOrDefault(); if (att != null && node.Name.ToLower() == xmlNodeName.ToLower()) { //存在此节点则更新 node.InnerXml = innerText; isExistsNode = true; #region //遍历xpath节点中的所有属性 bool isExistsAttribute = false; foreach (XmlAttribute attribute in node.Attributes) { if (attribute.Name.ToLower() == XmlAttributeName.ToLower()) { //节点中存在此属性则更新 attribute.Value = XmlAttributeValues; isExistsAttribute = true; break; } } if (!isExistsAttribute) { //节点中不存在此属性则创建 XmlAttribute xmlAttribute = xmlDoc.CreateAttribute(XmlAttributeName); xmlAttribute.Value = XmlAttributeValues; node.Attributes.Append(xmlAttribute); } #endregion break; } } if (!isExistsNode) { //不存在此节点则创建 XmlElement subElement = xmlDoc.CreateElement(xmlNodeName); subElement.InnerXml = innerText; XmlAttribute xmlAttribute = xmlDoc.CreateAttribute(XmlAttributeName); xmlAttribute.Value = XmlAttributeValues; subElement.Attributes.Append(xmlAttribute); xmlNode.AppendChild(subElement); } } xmlDoc.Save(xmlFileName); //保存到XML文档 isSuccess = true; } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return isSuccess; } /// <summary> /// 依据匹配XPath表达式的第一个节点来创建或更新它的子节点(如果节点存在则更新,不存在则创建) /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param> /// <param name="xmlNodeName">要匹配xmlNodeName的节点名称</param> /// <param name="innerText">节点文本值</param> /// <param name="parentinnerText">指定父节点文本值</param> /// <returns>成功返回true,失败返回false</returns> public static bool CreateOrUpdateXmlNodeByXPath(string xmlFileName, string xpath, string xmlNodeName, string innerText, string parentAttributevalues) { bool isSuccess = false; bool isExistsNode = false;//标识节点是否存在 XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNodeList xlist = xmlDoc.SelectNodes(xpath); //主要 XmlNode xmlNode = xlist.Cast<XmlNode>().Where(o => o.Attributes.Cast<XmlAttribute>().FirstOrDefault(a => a.Name == "Name" && a.Value == parentAttributevalues) != null).FirstOrDefault(); //XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); if (xmlNode != null) { //遍历xpath节点下的所有子节点 foreach (XmlNode node in xmlNode.ChildNodes) { if (node.Name.ToLower() == xmlNodeName.ToLower()) { //存在此节点则更新 node.InnerXml = innerText; isExistsNode = true; break; } } if (!isExistsNode) { //不存在此节点则创建 XmlElement subElement = xmlDoc.CreateElement(xmlNodeName); subElement.InnerXml = innerText; xmlNode.AppendChild(subElement); } } xmlDoc.Save(xmlFileName); //保存到XML文档 isSuccess = true; } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return isSuccess; } /// <summary> /// 依据匹配XPath表达式的第一个节点来创建或更新它的属性(如果属性存在则更新,不存在则创建) /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param> /// <param name="xmlAttributeName">要匹配xmlAttributeName的属性名称</param> /// <param name="value">属性值</param> /// <returns>成功返回true,失败返回false</returns> public static bool CreateOrUpdateXmlAttributeByXPath(string xmlFileName, string xpath, string xmlAttributeName, string value) { bool isSuccess = false; bool isExistsAttribute = false;//标识属性是否存在 XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); if (xmlNode != null) { //遍历xpath节点中的所有属性 foreach (XmlAttribute attribute in xmlNode.Attributes) { if (attribute.Name.ToLower() == xmlAttributeName.ToLower()) { //节点中存在此属性则更新 attribute.Value = value; isExistsAttribute = true; break; } } if (!isExistsAttribute) { //节点中不存在此属性则创建 XmlAttribute xmlAttribute = xmlDoc.CreateAttribute(xmlAttributeName); xmlAttribute.Value = value; xmlNode.Attributes.Append(xmlAttribute); } } xmlDoc.Save(xmlFileName); //保存到XML文档 isSuccess = true; } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return isSuccess; } #endregion #region XML文档节点或属性的删除 /// <summary> /// 删除匹配XPath表达式的第一个节点(节点中的子元素同时会被删除) /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param> /// <returns>成功返回true,失败返回false</returns> public static bool DeleteXmlNodeByXPath(string xmlFileName, string xpath) { bool isSuccess = false; XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); if (xmlNode != null) { //删除节点 xmlNode.ParentNode.RemoveChild(xmlNode); } xmlDoc.Save(xmlFileName); //保存到XML文档 isSuccess = true; } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return isSuccess; } /// <summary> /// 删除匹配XPath表达式的第一个节点中的匹配参数xmlAttributeName的属性 /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param> /// <param name="xmlAttributeName">要删除的xmlAttributeName的属性名称</param> /// <returns>成功返回true,失败返回false</returns> public static bool DeleteXmlAttributeByXPath(string xmlFileName, string xpath, string xmlAttributeName) { bool isSuccess = false; bool isExistsAttribute = false; XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); XmlAttribute xmlAttribute = null; if (xmlNode != null) { //遍历xpath节点中的所有属性 foreach (XmlAttribute attribute in xmlNode.Attributes) { if (attribute.Name.ToLower() == xmlAttributeName.ToLower()) { //节点中存在此属性 xmlAttribute = attribute; isExistsAttribute = true; break; } } if (isExistsAttribute) { //删除节点中的属性 xmlNode.Attributes.Remove(xmlAttribute); } } xmlDoc.Save(xmlFileName); //保存到XML文档 isSuccess = true; } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return isSuccess; } /// <summary> /// 删除匹配XPath表达式的第一个节点中的所有属性 /// </summary> /// <param name="xmlFileName">XML文档完全文件名(包含物理路径)</param> /// <param name="xpath">要匹配的XPath表达式(例如:"//节点名//子节点名</param> /// <returns>成功返回true,失败返回false</returns> public static bool DeleteAllXmlAttributeByXPath(string xmlFileName, string xpath) { bool isSuccess = false; XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.Load(xmlFileName); //加载XML文档 XmlNode xmlNode = xmlDoc.SelectSingleNode(xpath); if (xmlNode != null) { //遍历xpath节点中的所有属性 xmlNode.Attributes.RemoveAll(); } xmlDoc.Save(xmlFileName); //保存到XML文档 isSuccess = true; } catch (Exception ex) { throw ex; //这里可以定义你自己的异常处理 } return isSuccess; } #endregion } }
添加 FormHelper
using System; using System.Windows.Forms; namespace FormTest { public class FormHelper { //这是XML文档物理文件名（包含物理路径） private static string xmlFileName = Application.StartupPath + @"\Config\parameter.xml"; //这是XML文档根节点名 private static string rootNodeName = "Forms"; /// <summary> /// 保存控件参数 /// 放到FormClosing事件里 /// </summary> /// <param name="c"></param> public static void SetFormParam(Control c) { CreatXml(); string str = ""; GetParam(c, ref str); str = str.TrimEnd(‘|‘); //保存xml文档 string xpath = "/" + rootNodeName; //这是新节点的父节点路径/Forms string nodename = "FormName"; //这是新节点名称,在父节点下新增 string nodetext = c.Text;//窗体名 bool isSuccess = XMLHelper.CreateOrUpdateXmlNodeByXPath(xmlFileName, xpath, nodename, "", "Name", nodetext); string xpath2 = xpath + "/" + nodename; //这是新子节点的父节点路径/Forms/FormName string nodename2 = "parm"; //这是新子节点名称,在父节点下新增 string nodetext2 = str;//窗体控件参数字符串 isSuccess = XMLHelper.CreateOrUpdateXmlNodeByXPath(xmlFileName, xpath2, nodename2, nodetext2, nodetext); } /// <summary> /// 加载控件参数 /// 放到Load事件尾 /// </summary> /// <param name="c"></param> public static void LoadFormParam(Control c) { //获取xml参数文档 if (System.IO.File.Exists(xmlFileName)) { string xpath = "/" + rootNodeName + "/FormName"; string parm = XMLHelper.GetXmlByAttribute(xmlFileName, xpath, "parm", "Name", c.Text); SetParam(c, parm); } } private static void CreatXml() { if (!System.IO.File.Exists(xmlFileName)) { if (!System.IO.Directory.Exists(System.IO.Path.GetDirectoryName(xmlFileName))) System.IO.Directory.CreateDirectory(System.IO.Path.GetDirectoryName(xmlFileName)); XMLHelper.CreateXmlDocument(xmlFileName, rootNodeName, "1.0", "utf-8", null); //MessageBox.Show("XML文档创建成功:" + xmlFileName); } } private static void GetParam(Control c, ref string str) { try { foreach (Control ctl in c.Controls) { if (ctl is TextBox) { TextBox tx = ctl as TextBox; str += tx.Name + "$" + tx.Text + "|"; } if (ctl is CheckBox) { CheckBox tx = ctl as CheckBox; str += tx.Name + "$" + tx.Checked + "|"; } if (ctl is ComboBox) { ComboBox tx = ctl as ComboBox; str += tx.Name + "$" + tx.SelectedIndex.ToString() + "|"; } if (ctl.Controls.Count > 0) GetParam(ctl, ref str); } } catch (Exception) { } } private static void SetParam(Control c, string parm) { try { foreach (Control ctl in c.Controls) { foreach (string str in parm.Split(‘|‘)) { if (ctl.Name == str.Split(‘$‘)[0]) { if (ctl is TextBox) { TextBox tx = ctl as TextBox; tx.Text = str.Split(‘$‘)[1]; } if (ctl is CheckBox) { CheckBox tx = ctl as CheckBox; tx.Checked = Convert.ToBoolean(str.Split(‘$‘)[1]); } if (ctl is ComboBox) { ComboBox tx = ctl as ComboBox; tx.SelectedIndex = Convert.ToInt32(str.Split(‘$‘)[1]); } } } if (ctl.Controls.Count > 0) SetParam(ctl, parm); } } catch (Exception) { } } #region 参数保存 private static string xmlparamFileName = Application.StartupPath + @"\Config\param.xml"; /// <summary> /// 保存参数 /// </summary> /// <param name="paramname">参数名</param> /// <param name="paramvalues">参数值</param> public static void SetValue(string paramname, object paramvalues) { setvalues(paramname, paramvalues.ToString()); } /// <summary> /// 获取参数 /// </summary> /// <param name="paramname">参数名</param> /// <param name="def">默认值</param> /// <returns></returns> public static string GetValue(string paramname, string def = "") { string str = getvalues(paramname); if (str == "") str = def; return str; } /// <summary> /// 获取参数 /// </summary> /// <param name="paramname">参数名</param> /// <param name="def">默认值</param> /// <returns></returns> public static bool GetBoolValue(string paramname, bool def = false) { bool b = false; try { string str = getvalues(paramname); if (str == "") return def; b = Convert.ToBoolean(str.Trim()); } catch (Exception) { b = def; } return b; } /// <summary> /// 获取参数 /// </summary> /// <param name="paramname">参数名</param> /// <param name="def">默认值</param> /// <returns></returns> public static int GetIntValue(string paramname, int def = -1) { try { double val = GetDoubleValue(paramname, def); return Convert.ToInt32(val); } catch (Exception) { return def; } } /// <summary> /// 获取参数 /// </summary> /// <param name="paramname">参数名</param> /// <param name="def">默认值</param> /// <returns></returns> public static double GetDoubleValue(string paramname, double def = -1) { try { string str = getvalues(paramname); if (str == "") return def; return Convert.ToDouble(str.Trim()); } catch (Exception) { return def; } } private static void setvalues(string paramname, string paramvalues) { string root = "params"; if (!System.IO.File.Exists(xmlparamFileName)) { if (!System.IO.Directory.Exists(System.IO.Path.GetDirectoryName(xmlparamFileName))) System.IO.Directory.CreateDirectory(System.IO.Path.GetDirectoryName(xmlparamFileName)); XMLHelper.CreateXmlDocument(xmlparamFileName, root, "1.0", "utf-8", null); } string xpath = "/" + root; //这是新节点的父节点路径/Forms string nodename = "param"; //这是新节点名称,在父节点下新增 string nodetext = paramname; bool isSuccess = XMLHelper.CreateOrUpdateXmlNodeByXPath(xmlparamFileName, xpath, nodename, paramvalues, "Name", nodetext); } private static string getvalues(string paramname) { string str = string.Empty; //获取xml参数文档 if (System.IO.File.Exists(xmlparamFileName)) { string xpath = "/params/param"; str = XMLHelper.GetXmlByAttribute(xmlparamFileName, xpath, "Name", paramname); } return str; } #endregion } }
界面调用
保存参数
private void Form1_FormClosing(object sender, FormClosingEventArgs e) { FormHelper.SetFormParam(this); }
回读参数
private void Form1_Load(object sender, EventArgs e) { FormHelper.LoadFormParam(this); }
xml 文档
<?xml version="1.0" encoding="utf-8"?> <Forms> <FormName Name="测试"> <parm>comboBox1$2|checkBox1$True|textBox3$pantext|textBox2$sfafas|textBox1$123</parm> </FormName> <FormName Name="Form1"> <parm>textBox3$pantext|textBox2$sfafas|textBox1$123</parm> </FormName> </Forms>
测试界面
只做了TextBox、CheckBox、ComboBox参数保存 如需增加自行修改FormHelper里的GetParam和SetParam方法
单个参数保存
示例
FormHelper.SetValue("132", "125646546793");
FormHelper.SetValue("", 45678.012);
double d = FormHelper.GetDoubleValue("");
int a = FormHelper.GetIntValue("132",4566);
bool b = FormHelper.GetBoolValue("dsfs");
生成的xml文档
<?xml version="1.0" encoding="utf-8"?> <params> <param Name="132">12564654679879463</param> <param Name="">45678.012</param> </params>