/// <summary>
/// 更新记录
/// </summary>
/// <param name="model">需要更新到数据库的实体类</param>
/// <param name="sColList">需要更新的字段</param>
public virtual bool Update(T model, string sColList)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update " + TableName + " set ");
PropertyInfo[] pis = ModelProperties;
// typeof(T).GetProperties(BindingFlags.Instance | BindingFlags.DeclaredOnly | BindingFlags.Public);
List <DbParam> listParam = new List <DbParam>();
if (string.IsNullOrEmpty(sColList))
{
for (int i = 0; i < pis.Length; i++)
{
if (pis[i].Name != PrimaryKey)
{
strSql.AppendFormat("[{0}]=@{0},", pis[i].Name);
}
listParam.Add(new DbParam
{
ParamDbType = DbTypeConvert.GetDbType(pis[i].PropertyType),
ParamName = pis[i].Name,
ParamValue = pis[i].GetValue(model, null)
});
}
}
else
{
string[] strArr = sColList.Split(',');
foreach (PropertyInfo pi in pis)
{
for (int i = 0; i < strArr.Length; i++)
{
if (pi.Name == PrimaryKey || pi.Name != strArr[i])
{
continue;
}
strSql.AppendFormat("[{0}]=@{0},", pi.Name);
}
listParam.Add(new DbParam
{
ParamDbType = DbTypeConvert.GetDbType(pi.PropertyType),
ParamName = pi.Name,
ParamValue = pi.GetValue(model, null)
});
}
}
strSql = strSql.Replace(",", " ", strSql.Length - 1, 1);
strSql.Append(" where " + PrimaryKey + "=@" + PrimaryKey);
Database db = DatabaseFactory.CreateDatabase(connName);
using (DbCommand cmd = db.GetSqlStringCommand(strSql.ToString()))
{
foreach (DbParam dbpm in listParam)
{
db.AddInParameter(cmd, dbpm.ParamName, dbpm.ParamDbType, dbpm.ParamValue);
}
return(db.ExecuteNonQuery(cmd) > 0 ? true : false);
}
}
/// <summary>
/// 添加记录，返回当前插入的这条记录的ID
/// </summary>
/// <param name="model">实体层某实体的实例</param>
public virtual int Add(T model)
{
StringBuilder strSql = new StringBuilder();
StringBuilder strParameter = new StringBuilder();
strSql.Append(string.Format("insert into {0}(", TableName));
PropertyInfo[] pis = ModelProperties;
//typeof(T).GetProperties(BindingFlags.Instance | BindingFlags.DeclaredOnly | BindingFlags.Public);
List <DbParam> listParam = new List <DbParam>();
for (int i = 0; i < pis.Length; i++)
{
if (t.IsAutoId)
{
if (t.PrimaryKey == pis[i].Name)
{
continue;
}
}
strSql.Append("[" + pis[i].Name + "],"); //构造SQL语句前半部份
strParameter.Append("@" + pis[i].Name + ","); //构造参数SQL语句
listParam.Add(new DbParam
{
ParamName = pis[i].Name,
ParamDbType = DbTypeConvert.GetDbType(pis[i].PropertyType),
ParamValue = pis[i].GetValue(model, null)
});
}
strSql = strSql.Replace(",", ")", strSql.Length - 1, 1);
strParameter = strParameter.Replace(",", ")", strParameter.Length - 1, 1);
strSql.Append(" values (");
strSql.Append(strParameter + ";");
if (t.IsAutoId)
{
strSql.Append("select SCOPE_IDENTITY()");
}
Database db = DatabaseFactory.CreateDatabase(connName);
using (DbCommand cmd = db.GetSqlStringCommand(strSql.ToString()))
{
foreach (DbParam dbpm in listParam)
{
db.AddInParameter(cmd, dbpm.ParamName, dbpm.ParamDbType, dbpm.ParamValue);
}
object obj = db.ExecuteScalar(cmd);
return(DbTypeConvert.ToInt32(obj));
}
}
protected virtual List <DbParam> GetAddUpdatePms(T model, bool IsAdd)
{
PropertyInfo[] pis = ModelProperties;
List <DbParam> listParam = new List <DbParam>();
for (int i = 0; i < pis.Length; i++)
{
if (IsAdd)
{
if (t.IsAutoId)
{
if (t.PrimaryKey == pis[i].Name)
{
continue;
}
}
}
if (model == null)
{
listParam.Add(new DbParam
{
ParamName = pis[i].Name,
ParamDbType = DbTypeConvert.GetDbType(pis[i].PropertyType),
ParamValue = null
});
}
else
{
listParam.Add(new DbParam
{
ParamName = pis[i].Name,
ParamDbType = DbTypeConvert.GetDbType(pis[i].PropertyType),
ParamValue = pis[i].GetValue(model, null)
});
}
}
return(listParam);
}
