/// <summary>
/// DataTable转List
/// </summary>
public List <Model.user_attach_log> DataTableToList(DataTable dt)
{
//datatable没有数据 返回null
if (dt == null || dt.Rows.Count == 0)
{
return(null);
}
//model的容器
List <Model.user_attach_log> modelList = new List <Model.user_attach_log>();
//datatable可能有很多行数据，遍历每一行
foreach (DataRow dr in dt.Rows)
{
Model.user_attach_log model = new Model.user_attach_log();
for (int i = 0; i < dr.Table.Columns.Count; i++)
{
//发现datatable的列属性
PropertyInfo propertyInfo = model.GetType().GetProperty(dr.Table.Columns[i].ColumnName);
if (propertyInfo != null && dr[i] != DBNull.Value)
{
//用索引值设置属性值
propertyInfo.SetValue(model, dr[i], null);
}
}
modelList.Add(model);
}
return(modelList);
}
/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(Model.user_attach_log model)
{
StringBuilder strSql = new StringBuilder();
StringBuilder str1 = new StringBuilder();
//利用反射获得属性的所有公共属性
PropertyInfo[] pros = model.GetType().GetProperties();
List <SqlParameter> paras = new List <SqlParameter>();
strSql.Append("update " + databaseprefix + "user_attach_log set ");
foreach (PropertyInfo pi in pros)
{
//如果不是主键则追加sql字符串
if (!pi.Name.Equals("id"))
{
//判断属性值是否为空
if (pi.GetValue(model, null) != null)
{
str1.Append(pi.Name + "=@" + pi.Name + ","); //声明参数
paras.Add(new SqlParameter("@" + pi.Name, pi.GetValue(model, null))); //对参数赋值
}
}
}
strSql.Append(str1.ToString().Trim(','));
strSql.Append(" where id=@id");
paras.Add(new SqlParameter("@id", model.id));
return(DbHelperSQL.ExecuteSql(strSql.ToString(), paras.ToArray()) > 0);
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public Model.user_attach_log GetModel(int id)
{
StringBuilder strSql = new StringBuilder();
StringBuilder str1 = new StringBuilder();
Model.user_attach_log model = new Model.user_attach_log();
//利用反射获得属性的所有公共属性
PropertyInfo[] pros = model.GetType().GetProperties();
foreach (PropertyInfo p in pros)
{
str1.Append(p.Name + ",");//拼接字段
}
strSql.Append("select top 1 " + str1.ToString().Trim(','));
strSql.Append(" from " + databaseprefix + "user_attach_log");
strSql.Append(" where id=@id");
SqlParameter[] parameters =
{
new SqlParameter("@id", SqlDbType.Int, 4)
};
parameters[0].Value = id;
DataTable dt = DbHelperSQL.Query(strSql.ToString(), parameters).Tables[0];
if (dt.Rows.Count > 0)
{
return(DataRowToModel(dt.Rows[0]));
}
else
{
return(null);
}
}
/// <summary>
/// 将对象转换实体
/// </summary>
public Model.user_attach_log DataRowToModel(DataRow row)
{
Model.user_attach_log model = new Model.user_attach_log();
if (row != null)
{
//利用反射获得属性的所有公共属性
Type modelType = model.GetType();
for (int i = 0; i < row.Table.Columns.Count; i++)
{
//查找实体是否存在列表相同的公共属性
PropertyInfo proInfo = modelType.GetProperty(row.Table.Columns[i].ColumnName);
if (proInfo != null && row[i] != DBNull.Value)
{
proInfo.SetValue(model, row[i], null);//用索引值设置属性值
}
}
}
return(model);
}
/// <summary>
/// 插入一条下载附件记录
/// </summary>
public int AddLog(Model.user_attach_log model)
{
int i = 0;
StringBuilder strSql = new StringBuilder();
StringBuilder str1 = new StringBuilder(); //数据字段
StringBuilder str2 = new StringBuilder(); //数据参数
//利用反射获得属性的所有公共属性
PropertyInfo[] pros = model.GetType().GetProperties();
List <object> paras = new List <object>();
strSql.Append("insert into " + databaseprefix + "dt_user_attach_log(");
foreach (PropertyInfo pi in pros)
{
//如果不是主键则追加sql字符串
if (!pi.Name.Equals("id"))
{
//判断属性值是否为空
if (pi.GetValue(model, null) != null && !pi.GetValue(model, null).ToString().Equals(""))
{
str1.Append(pi.Name + ","); //拼接字段
str2.Append("@" + i + ","); //声明参数
i++;
paras.Add(pi.GetValue(model, null)); //对参数赋值
}
}
}
strSql.Append(str1.ToString().Trim(','));
strSql.Append(") values (");
strSql.Append(str2.ToString().Trim(','));
strSql.Append(") ");
strSql.Append(";SELECT @@@IDENTITY;");
object obj = WriteDataBase.ExecuteScalar <object>(strSql.ToString(), paras.ToArray());
if (obj == null)
{
return(0);
}
else
{
return(Convert.ToInt32(obj));
}
}
/// <summary>
/// 插入一条下载附件记录
/// </summary>
public int AddLog(Model.user_attach_log model)
{
StringBuilder strSql = new StringBuilder();
StringBuilder str1 = new StringBuilder(); //数据字段
StringBuilder str2 = new StringBuilder(); //数据参数
//利用反射获得属性的所有公共属性
PropertyInfo[] pros = model.GetType().GetProperties();
List <MySqlParameter> paras = new List <MySqlParameter>();
strSql.Append("insert into " + databaseprefix + "user_attach_log(");
foreach (PropertyInfo pi in pros)
{
//如果不是主键则追加sql字符串
if (!pi.Name.Equals("id"))
{
//判断属性值是否为空
if (pi.GetValue(model, null) != null)
{
str1.Append(pi.Name + ","); //拼接字段
str2.Append("@" + pi.Name + ","); //声明参数
paras.Add(new MySqlParameter("@" + pi.Name, pi.GetValue(model, null))); //对参数赋值
}
}
}
strSql.Append(str1.ToString().Trim(','));
strSql.Append(") values (");
strSql.Append(str2.ToString().Trim(','));
strSql.Append(") ");
strSql.Append(";select @@IDENTITY;");
object obj = DbHelperMySql.GetSingle(strSql.ToString(), paras.ToArray());
if (obj == null)
{
return(0);
}
else
{
return(Convert.ToInt32(obj));
}
}
