自定义WebConfig

来源：互联网发布：搜达足球数据编辑：程序博客网时间：2024/05/21 09:50

在系统开发过程中，经常遇到添加一下配置信息的需求，有时候需要在App.config或Web.config中添加，如果永远都配置在appSetting节点下面，配置项多了，就显得比较混乱，其实我们也可以自定义节点配置。

首先，在configSection节点中添加自定义的配置信息，如下，其中Type中用于解释该配置信息的类与程序集名称。如下:

<configSections><section name="dataSourceSettings" type="XXX.App.ServicePlanEmailPromotion.DataSourceSettings,XXX.App.ServicePlanEmailPromotion"/></configSections>

然后就可以在WebConfig下添加自己定义的节点信息，跟定义xml文件格式一样，可自由定义。如下：

<dataSourceSettings dataBase="TempTable"><tables><add name="DM_ESPOR_SonicWall_Result_CS_B2B" type="CS" /><add name="DM_ESPOR_SonicWall_Result_EM_B2B" type="EM" /><add name="DM_ESPOR_SonicWall_Result_CS_B2C" type="CS"/><add name="DM_ESPOR_SonicWall_Result_EM_B2C" type="EM"/></tables></dataSourceSettings>

Webconfig中需要的节点配置信息定义好之后，就需要建立对应的Class来读取这些信息，也就是上面提到的 XXX.App.ServicePlanEmailPromotion.DataSourceSettings.

创建的Class内容如下：

    public sealed class DataSourceSettings : ConfigurationSection    {        [ConfigurationProperty("tables", IsRequired = true)]        public TableCollection Tables        {            get            {                return (TableCollection)base["tables"];            }        }        [ConfigurationProperty("dataBase", IsRequired = true)]        public string DataBaseName        {            get            {                return (string)base["dataBase"];            }        }    }

其中Tables和DataBaseName两个属性分别对应配置文件中tables和dataBase的内容。

TableCollection是一个集合类，如下：

public sealed class TableCollection : ConfigurationElementCollection    {        private IList<DataSourceTable> tableList;        protected override ConfigurationElement CreateNewElement()        {            return new TableElement();        }        protected override object GetElementKey(ConfigurationElement element)        {            TableElement tableElement = element as TableElement;            return tableElement.Name;        }        public IList<DataSourceTable> TableList        {            get            {                if (this.tableList == null)                {                    tableList = new List<DataSourceTable>();                    foreach (TableElement table in this)                    {                        tableList.Add(new DataSourceTable { Name = table.Name, Type = table.Type });                    }                }                return this.tableList;            }        }        public new string this[string name]        {            get            {                string type = string.Empty;                if (this.tableList.Where(table => table.Name == name).Any())                {                    return this.tableList.Where(table => table.Name == name).FirstOrDefault().Type;                }                else                {                    throw new ArgumentNullException("Not found " + name + " in tables nodes.");                }            }        }    }

    public sealed class TableElement : ConfigurationElement    {        /// <summary>        /// Table type.        /// </summary>        [ConfigurationProperty("type", IsRequired = true)]        public string Type        {            get { return (string)base["type"]; }            set { base["type"] = value; }        }        /// <summary>        /// Table name.        /// </summary>        [ConfigurationProperty("name", IsRequired = true)]        public string Name        {            get { return (string)base["name"]; }            set { base["name"] = value; }        }    }

    public class DataSourceTable    {        public string Name { get; set; }        public string Type { get; set; }    }

那么该如何使用呢？请看下方：

            DataSourceSettings dataSource = ConfigurationManager.GetSection("dataSourceSettings") as DataSourceSettings;            var dataSourceList = dataSource.Tables.TableList;

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