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using System; using System.Configuration; using System.Data; using System.Data.SqlClient;
namespace Swift.API { public class Dao { private SqlConnection _connection;
public Dao() { Init(); }
private void Init() { _connection = new SqlConnection(GetConnectionString()); }
private void OpenConnection() { if (_connection.State == ConnectionState.Open) _connection.Close(); _connection.Open(); }
private void CloseConnection() { if (_connection.State == ConnectionState.Open) this._connection.Close(); }
private string GetConnectionString() { return ConfigurationSettings.AppSettings["RemittanceString"].ToString(); }
public DataSet ExecuteDataset(string sql) { var ds = new DataSet(); SqlDataAdapter da; try { OpenConnection(); da = new SqlDataAdapter(sql, _connection);
da.Fill(ds); da.Dispose(); CloseConnection(); } catch (Exception ex) { throw ex; } finally { da = null; CloseConnection(); } return ds; }
public DataTable ExecuteDataTable(string sql) { using (var ds = ExecuteDataset(sql)) { if (ds == null || ds.Tables.Count == 0) return null;
return ds.Tables[0]; } }
public DataRow ExecuteDataRow(string sql) { using (var ds = ExecuteDataset(sql)) { if (ds == null || ds.Tables.Count == 0) return null;
if (ds.Tables[0].Rows.Count == 0) return null;
return ds.Tables[0].Rows[0]; } }
public String GetSingleResult(string sql) { try { var ds = ExecuteDataset(sql); if (ds == null || ds.Tables.Count == 0 || ds.Tables[0].Rows.Count == 0) return "";
return ds.Tables[0].Rows[0][0].ToString(); } catch (Exception ex) { throw ex; } finally { CloseConnection(); } }
public String FilterString(string strVal) { var str = FilterQuote(strVal);
if (str.ToLower() != "null") str = "'" + str + "'";
return str; }
public String FilterQuote(string strVal) { if (string.IsNullOrEmpty(strVal)) { strVal = ""; } var str = strVal.Trim();
if (!string.IsNullOrEmpty(str)) { str = str.Replace(";", ""); //str = str.Replace(",", "");
str = str.Replace("--", ""); str = str.Replace("'", "");
str = str.Replace("/*", ""); str = str.Replace("*/", "");
str = str.Replace(" select ", ""); str = str.Replace(" insert ", ""); str = str.Replace(" update ", ""); str = str.Replace(" delete ", "");
str = str.Replace(" drop ", ""); str = str.Replace(" truncate ", ""); str = str.Replace(" create ", "");
str = str.Replace(" begin ", ""); str = str.Replace(" end ", ""); str = str.Replace(" char(", "");
str = str.Replace(" exec ", ""); str = str.Replace(" xp_cmd ", "");
str = str.Replace("<script", ""); } else { str = "null"; } return str; }
public string SingleQuoteToDoubleQuote(string strVal) { strVal = strVal.Replace("\"", ""); return strVal.Replace("'", "\""); }
public DbResult ParseDbResult(DataTable dt) { var res = new DbResult(); if (dt.Rows.Count > 0) { res.ErrorCode = dt.Rows[0][0].ToString(); res.Msg = dt.Rows[0][1].ToString(); res.Id = dt.Rows[0][2].ToString(); } if (dt.Columns.Count == 4) { res.Extra = dt.Rows[0][3].ToString(); } return res; }
public DbResult ParseDbResult(string sql) { return ParseDbResult(ExecuteDataset(sql).Tables[0]); } } }
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