/// <summary>
/// 获取某列全部的值
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public List <DictionaryPara> GetColume(DictionaryPara param)
{
if (param.Count == 0)
{
return(null);
}
List <string> items = new List <string>(param.Keys);
DataSet ds = Sql.SelectColumn(param.tablename, items.ToArray());
if (ds != null && ds.Tables.Count > 0)
{
DataTable table = ds.Tables[0];
if (table.Rows.Count == 0)
{
return(null);
}
List <DictionaryPara> dp = new List <MySQLTools.DictionaryPara>();
//Rows用来存储查询结果数据
foreach (DataRow row in table.Rows)
{
DictionaryPara p = new MySQLTools.DictionaryPara(param.tablename);
//Colume用来存储查询的字段
foreach (DataColumn col in table.Columns)
{
p.Add(col.ColumnName, row[col.ColumnName].ToString());
}
dp.Add(p);
}
return(dp);
}
return(null);
}
/// <summary>
/// 插入一条数据
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public bool AddTable(DictionaryPara param)
{
//检查传入的待插入的值中是否有空值
foreach (string key in param.Keys)
{
if (string.IsNullOrEmpty(param[key]))
{
if (DEBUG != null)
{
DEBUG(param.tablename + "添加数据失败，" + key + "不能为空数据");
}
return(false);
}
}
//转换传入的数据为数组类型
List <string> tempValue = new List <string>(param.Values);
string[] values = tempValue.ToArray();
//执行插入数据
int res = Sql.InsertData(param.tablename, values);
//如果插入的结果影响的行数不为0
if (res > 0)
{
return(true); //返回插入成功
}
return(false); //返回插入失败
}
/// <summary>
/// 获取某列最后的值
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public bool GetEndLineValue(ref DictionaryPara param)
{
if (param.Count == 0)
{
return(false);
}
List <string> keysList = new List <string>(param.Keys);
string where = keysList[0];
DataSet ds = Sql.SelectMaxRow(param.tablename, where);
if (ds != null && ds.Tables.Count > 0)
{
DataTable table = ds.Tables[0];
if (table.Rows.Count == 0)
{
return(false);
}
if (table.Rows[0]["max(" + where + ")"] != null && table.Rows[0]["max(" + where + ")"].ToString() != "")
{
param[where] = table.Rows[0]["max(" + where + ")"].ToString();
return(true);
}
}
return(false);
}
/// <summary>
/// 修改语句
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public bool Delete(DictionaryPara param)
{
if (param.Count < 2)
{
return(false);
}
List <string> keys = new List <string>();
List <string> values = new List <string>();
foreach (string key in param.Keys)
{
if (!string.IsNullOrEmpty(param[key]))
{
keys.Add(key);
values.Add(param[key]);
}
}
string whereKey = keys[0];
string whereValue = values[0];
int res = Sql.DeleteData(param.tablename, whereKey, whereValue);
if (res > 0)
{
return(true);
}
return(false);
}
/// <summary>
/// 刷新数据
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public bool UpdateInItems(DictionaryPara param)
{
if (param.Count < 2)
{
return(false);
}
List <string> keys = new List <string>();
List <string> values = new List <string>();
foreach (string key in param.Keys)
{
if (!string.IsNullOrEmpty(param[key]))
{
keys.Add(key);
values.Add(param[key]);
}
}
//搜寻规则：排位位于0的键和值作为搜寻字段和值
//string whereKey = param.Keys.ToList()[0];
//string whereValue = param[whereKey];
string whereKey = keys[0];
string whereValue = values[0];
//删除位于第0位的
keys.RemoveAt(0);
values.RemoveAt(0);
int res = Sql.UpdateData(param.tablename, keys.ToArray(), values.ToArray(), whereKey, whereValue);
if (res > 0)
{
return(true);
}
return(false);
}
/// <summary>
/// 根据字段名插入一行数据
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public bool AddTableAtItems(DictionaryPara param)
{
List <string> tempKey = new List <string>();
List <string> tempValue = new List <string>();
//检查传入的待插入的值中是否有空值
foreach (string key in param.Keys)
{
if (!string.IsNullOrEmpty(param[key]))
{
tempKey.Add(key);
tempValue.Add(param[key]);
}
}
//转换传入的数据为数组类型
string[] items = tempKey.ToArray();
string[] values = tempValue.ToArray();
//执行插入数据
int res = Sql.InsertData(param.tablename, values, items);
//如果插入的结果影响的行数不为0
if (res > 0)
{
return(true); //返回插入成功
}
return(false); //返回插入失败
}
/// <summary>
/// 查询一行数据
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public bool GetTable(ref DictionaryPara param)
{
if (param.Count < 2)
{
return(false);
}
//查询一行的数据，待查询的语句不需要包含值
List <string> keys = new List <string>(param.Keys);
//但是要保证要搜寻的首位键值对必须有值
if (string.IsNullOrEmpty(param[keys[0]]))
{
return(false);
}
string whereKey = keys[0];
string whereValue = param[keys[0]];
keys.RemoveAt(0);
//执行查询单行数据
DataSet ds = Sql.SelectData(param.tablename, keys.ToArray(), whereKey, whereValue);
//如果查询成功并且得到查询数据
if (ds != null && ds.Tables.Count != 0)
{
DataTable table = ds.Tables[0];
//Rows用来存储查询结果数据
//Colume用来存储查询的字段
if (table.Rows.Count == 0)
{
return(false);
}
for (int i = 0; i < keys.Count; i++)
{
//如果查询的数据不为空，将查询的数据赋值给相应的参数
if (table.Rows [0][keys [i]] != null && table.Rows [0][keys [i]].ToString() != "")
{
param[keys[i]] = table.Rows[0][keys[i]].ToString();
}
}
return(true);
}
//查询失败
return(false);
}
