asp.net小孔子cms中的数据添加修改

using System;     
using System.Data;     
using System.Configuration;     
using System.Collections;     
using System.Web;     
using System.Web.Security;     
using System.Web.UI;     
using System.Web.UI.WebControls;     
using System.Web.UI.WebControls.WebParts;     
using System.Web.UI.HtmlControls;     
using System.Data.OleDb;     
using System.Text;     

namespace mycms.DataOper.Data     
{     
    /// 

     
    /// dataHandle 的摘要说明     
    /// 

     
    public class dataHandle     
    {     
        public dataHandle()     
        {     
            this.conn = new OleDbConnection("Provider = Microsoft.Jet.OLEDB.4.0;Data Source = |DataDirectory|mycms.mdb");     
            this.conn.Open();     
            this.cmd = conn.CreateCommand();     
            this.da = new OleDbDataAdapter();     
        }    

        #region webform     
        //这个用来存放包括控件类型，字段，是否是字符串         
        public ArrayList alBinderItems = new ArrayList(8);     

        //这个只用来存放字段，值         
        public ArrayList alFieldItems = new ArrayList(8);     

        /// 

         
        /// 建立文本框到数据字段的绑定         
        /// 

           
        public void AddBind(TextBox tbx, string field, bool isStringType)     
        {     
            alBinderItems.Add(new BinderItem(tbx, field, isStringType));     
        }     

        /// 

     
        /// 下拉列表     
        /// 

     
        public void AddBind(DropDownList dd, string field, bool isStringType)     
        {     
            alBinderItems.Add(new BinderItem(dd, field, isStringType));     
        }     

        public void AddBind(RadioButtonList rb, string field, bool isStringType)     
        {     
            alBinderItems.Add(new BinderItem(rb, field, isStringType));     
        }     

        /// 

     
        /// 多选框     
        /// 

     
        public void AddBind(CheckBoxList cb, string field, bool isStringType)     
        {     
            alBinderItems.Add(new BinderItem(cb, field, isStringType));     
        }     

        /// 

     
        /// 需要修改数据时取出数据库中的记录填充到表单中     
        /// 

     
        public void BindWhenUp()     
        {     
            if (alBinderItems.Count == 0)     
            {     
                return;     
            }     
            BinderItem bi;     

    
            StringBuilder sbSql = new StringBuilder("select ");     
            for (int i = 0; i < alBinderItems.Count; i++)     
            {     
                bi = (BinderItem)alBinderItems[i];     
                //防止出现变量名     
                sbSql.Append("[" + bi.field + "]");     
                sbSql.Append(",");     
            }     
            sbSql.Remove(sbSql.Length - 1,1);     
            sbSql.Append(" from ");     
            sbSql.Append(this.tableName);     
            sbSql.Append(" where 1 = 1 and ");     
            sbSql.Append(this.ConditionExpress);     

            this.sqlCmd = sbSql.ToString();     
            dt = this.GetDataTable();     
            //如果没有记录则抛出异常     
            if (dt.Rows.Count == 0)     
            {     
               throw new ArgumentException("记录不存在");     
            }     

            DataRow dr = dt.Rows[0];     
            for (int j = 0; j < alBinderItems.Count; j++)     
            {     
                bi = (BinderItem)alBinderItems[j];     
                bi.SetValue(dr[bi.field].ToString());     
            }     

                 
        }     

        /// 

         
        /// 该方法实现从alBinderItems到alFieldItems的转换，目的：alFieldItems可以转为DbKeyItem，操作数据库时需要用到DbKeyItem     
        /// 

         
        public void Add()     
        {     
            if (this.alBinderItems.Count == 0)     
            {     
                return;     
            }     
            BinderItem bi = null;     

            for (int i = 0; i < alBinderItems.Count; i++)     
            {     
                bi = ((BinderItem)alBinderItems[i]);     
                AddFieldItem(bi.field, bi.GetValue());     
            }     

        }     

        /// 

             
        /// 添加一个字段/值对到数组中             
        /// 

             
        public void AddFieldItem(string _fieldName, object _fieldValue)     
        {     
            _fieldName = "[" + _fieldName + "]";     
            //遍历看是否已经存在字段名             

            for (int i = 0; i < this.alFieldItems.Count; i++)     
            {     
                if (((DbKeyItem)this.alFieldItems[i]).fieldName == _fieldName)     
                {     
                    throw new ArgumentException("字段已经存在");     
                }     
            }     
            this.alFieldItems.Add(new DbKeyItem(_fieldName, _fieldValue));     
        }    
        #endregion    

   
        #region 操作数据    

        #region 这里声明有关数据操作的必要参数           
        //当前所使用的数据库连接     

        protected OleDbConnection conn;     

        //当前所使用的命令对象     
        protected OleDbCommand cmd = new OleDbCommand();     

        //当前所使用的数据库适配器     
        protected OleDbDataAdapter da;     

        //当前的SQL语句     
        public string sqlCmd = string.Empty;     

        //当前操作所涉及的数据库表名     
        public string tableName = string.Empty;     

        //SQL条件     
        public string ConditionExpress;     

        //用于存放从数据库中取得的数据记录     
        protected DataTable dt;    
        #endregion     

        /// 

     
        /// 根据当前alFieldItem数组中存储的字段/值向指定表中添加一条记录。返回自动增长id     
        /// 

     
        ///      
        ///      
        public int InsertData(string _talbeName)     
        {     
            this.tableName = _talbeName;     
            this.sqlCmd = "insert into " + this.tableName + "(";     
            string temValue = " values(";     
            for (int i = 0; i < this.alFieldItems.Count; i++)     
            {     
                this.sqlCmd += ((DbKeyItem)alFieldItems[i]).fieldName + ",";     
                temValue += "@para" + i.ToString() + ",";     
            }     
            //分别去掉,         
            this.sqlCmd = Input.CutComma(this.sqlCmd) + ")" + Input.CutComma(temValue) + ")";     

            //声明执行语句     
            this.cmd.CommandText = this.sqlCmd;     
            GenParameters();     
            cmd.ExecuteNonQuery();     
            int autoId = 0;     
            try    
            {     
                cmd.CommandText = "select @@identity as id";     
                autoId = Convert.ToInt32(cmd.ExecuteScalar());     
            }     
            catch (Exception ex)     
            {     
                throw new Exception(ex.Message);     
            }     
            return autoId;     

        }     

        /// 

     
        /// 根据当前alFieldItem数组中存储的字段/值和条件表达式所指定的条件来更新数据库中的记录，返回受影响的行数     
        /// 

     
        /// 更新的数据表名称     
        /// 返回此次操作所影响的数据行数     
        public int UpData(string _tableName)     
        {     
            this.tableName = _tableName;     
            this.sqlCmd = "update " + this.tableName + " set ";     
            for (int i = 0; i < this.alFieldItems.Count; i++)     
            {     
                this.sqlCmd += ((DbKeyItem)alFieldItems[i]).fieldName;     
                this.sqlCmd += "=";     
                this.sqlCmd += "@para";     
                this.sqlCmd += i.ToString();     
                this.sqlCmd += ",";     
            }     
            this.sqlCmd = Input.CutComma(this.sqlCmd);     
            if (this.ConditionExpress != string.Empty)     
            {     
                this.sqlCmd = this.sqlCmd + " where " + this.ConditionExpress;     
            }     
            this.cmd.CommandText = this.sqlCmd;     
            this.GenParameters();     
            int effectedLines = this.cmd.ExecuteNonQuery();     
            return effectedLines;     

        }     

        /// 返回查询结果DataTable     
        public DataTable GetDataTable()     
        {     
            DataSet ds = this.GetDataSet();     
            return ds.Tables[0];     
        }     

        /// 

     
        /// 根据当前指定的SqlCmd获取DataSet，如果条件表达式不为空则会被清空，     
        /// 所以条件表达式必须包含在SqlCmd中     
        /// 

     
        public DataSet GetDataSet()     
        {     
            this.ConditionExpress = string.Empty;     
            this.cmd.CommandText = this.sqlCmd;     
            this.GenParameters();     
            DataSet ds = new DataSet();     
            this.da.SelectCommand = this.cmd;     
            this.da.Fill(ds);     
            return ds;     
        }     

    
        /// 

     
        /// 产生OleDbCommand对象所需的参数     
        /// 

     
        ///      
        protected void GenParameters()     
        {     

            if (this.alFieldItems.Count > 0)     
            {     
                for (int i = 0; i < this.alFieldItems.Count; i++)     
                {     
                    cmd.Parameters.AddWithValue("@para" + i.ToString(), ((DbKeyItem)alFieldItems[i]).fieldValue.ToString());     
                }     
            }     
        }    
        #endregion     
    }     

    
    public class BinderItem     
    {     
        //每个绑定控件都以object的形式被存储的         
        public object obj;     

        //绑定到数据库的字段名称         
        public string field;     

        //是否是字符串类型         
        public bool isStringType;     

        /// 

         
        /// 构造函数         
        /// 

         
        /// 需要绑定的控件对象         
        /// 绑定到的数据表字段名称         
        /// 是否是字符串类型         
        public BinderItem(object _obj, string _field, bool _isStringType)     
        {     
            this.obj = _obj;     
            this.field = _field;     
            this.isStringType = _isStringType;     
        }     

        /// 

         
        /// 根据控件类型获得控件的值         
        /// 

         
        ///          
        public string GetValue()     
        {     
            //字符串类型         
            if (obj is String)     
            {     
                return (string)obj;     
            }     

            //下拉框         
            if (obj is DropDownList)     
            {     
                DropDownList dd = (DropDownList)obj;     
                return dd.SelectedValue;     
            }     

            //多选框     
            if (obj is CheckBoxList)     
            {     
                string s = string.Empty;     
                CheckBoxList cb = (CheckBoxList)obj;     
                for (int i = 0; i < cb.Items.Count; i++)     
                {     
                    if (cb.Items[i].Selected)     
                    {     
                        s += cb.Items[i].Value + ",";     
                    }     
                }     
                return s;     
            }     

            //文本框         
            if (obj is TextBox)     
            {     
                TextBox tbx = (TextBox)obj;     
                return tbx.Text.Trim();     
            }     

            //Label         
            if (obj is Label)     
            {     
                Label lbl = (Label)obj;     
                return lbl.Text;     
            }     

            //单选组     
            if (obj is RadioButtonList)     
            {     
                RadioButtonList rb = (RadioButtonList)obj;     
                return rb.SelectedValue;     
            }     
            return string.Empty;     
        }     

        /// 

     
        /// 根据控件类型设定控件的值     
        /// 

     
        /// 要设定的值     
        public void SetValue(string _value)     
        {     
            //字符串类型     
            if (obj is string)     
            {     
                string s = (string)obj;     
                s = _value;     
                return;     
            }     

            //文本框     
            if (obj is TextBox)     
            {     
                TextBox tbx = (TextBox)obj;     
                tbx.Text = _value;     
                    return;     
            }     

            //单选按钮     
            if (obj is RadioButtonList)     
            {     
                RadioButtonList rb = (RadioButtonList)obj;     
                rb.SelectedValue = _value;     
                return;     
            }     

            //下拉列表     
            if (obj is DropDownList)     
            {     
                DropDownList dd = (DropDownList)obj;     
                dd.SelectedValue = _value;     
                return;     
            }     

        }     
    }     

    
    /// 

         
    /// 数据表中的字段属性：字段名，字段值         
    /// 

         
    public class DbKeyItem     
    {     
        /// 

         
        /// 字段名称         
        /// 

         
        public string fieldName;     

        /// 

         
        /// 字段值         
        /// 

         
        public string fieldValue;     

        public DbKeyItem(string _fileName, object _fieldValue)     
        {     
            this.fieldName = _fileName;     
            this.fieldValue = _fieldValue.ToString();     
        }     
    }     
}  
 return;     
            }     

            //单选按钮     
            if (obj is RadioButtonList)     
            {     
                RadioButtonList rb = (RadioButtonList)obj;     
                rb.SelectedValue = _value;     
                return;     
            }     

            //下拉列表     
            if (obj is DropDownList)     
            {     
                DropDownList dd = (DropDownList)obj;     
                dd.SelectedValue = _value;     
                return;     
            }     

        }     
    }     

    
    /// 

         
    /// 数据表中的字段属性：字段名，字段值         
    /// 

         
    public class DbKeyItem     
    {     
        /// 

         
        /// 字段名称         
        /// 

         
        public string fieldName;     

        /// 

         
        /// 字段值         
        /// 

         
        public string fieldValue;     

        public DbKeyItem(string _fileName, object _fieldValue)     
        {     
            this.fieldName = _fileName;     
            this.fieldValue = _fieldValue.ToString();     
        }     
    }     
}