97 lines
3.8 KiB
C#
97 lines
3.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Globalization;
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using System.IO;
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using System.Text;
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namespace VAR.DatabaseExplorer.Code
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{
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public static class DataTableHelper
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{
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public static void DataTable_GenerateInserts(TextWriter txtWriter, DataTable dataTable, string destTable)
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{
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var nfi = new NumberFormatInfo { NumberDecimalSeparator = "." };
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var sbColumns = new StringBuilder();
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foreach (DataColumn dc in dataTable.Columns)
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{
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// El nombre de la columna
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if (sbColumns.Length > 0) { sbColumns.Append(", "); }
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sbColumns.AppendFormat("[{0}]", dc.ColumnName);
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}
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// Recorrer la tabla de datos
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foreach (DataRow dr in dataTable.Rows)
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{
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var sbValues = new StringBuilder();
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foreach (DataColumn dc in dataTable.Columns)
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{
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// El valor de la columna
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if (sbValues.Length > 0) { sbValues.Append(", "); }
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object valor = dr[dc];
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if (valor == DBNull.Value || valor == null)
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{
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// NULOS
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sbValues.Append("NULL");
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}
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else
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{
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string type = dc.DataType.Name.ToLower();
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if (type == "string")
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{
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// Cadenas
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sbValues.AppendFormat("'{0}'", ((string)valor).Replace("'", "''"));
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}
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else if (type == "short" || type == "int16")
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{
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// short
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sbValues.Append(((short)valor).ToString(nfi));
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}
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else if (type == "int" || type == "int32")
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{
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// int
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sbValues.Append(((int)valor).ToString(nfi));
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}
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else if (type == "long" || type == "int64")
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{
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// long
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sbValues.Append(((long)valor).ToString(nfi));
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}
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else if (type == "decimal")
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{
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// Decimales
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sbValues.Append(((decimal)valor).ToString(nfi));
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}
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else if (type == "bit" || type == "bool" || type == "boolean")
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{
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// Booleanos
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sbValues.Append(((bool)valor) ? "1" : "0");
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}
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else if (type == "byte[]")
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{
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// Arrays de bytes (imagenes, archivos etc)
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sbValues.AppendFormat("0x{0}", BitConverter.ToString(((byte[])valor)).Replace("-", ""));
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}
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else if (type == "datetime")
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{
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// DateTIme
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sbValues.AppendFormat("'{0}'", ((DateTime)valor).ToString("yyyy-MM-dd HH:mm:ss"));
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}
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else
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{
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// Otros
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sbValues.AppendFormat("'{0}'", valor.ToString());
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}
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}
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}
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// Insertar fila a la datatable destino
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txtWriter.WriteLine(string.Format("INSERT INTO {0} ({1}) VALUES ({2});",
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destTable, sbColumns.ToString(), sbValues.ToString()));
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}
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}
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}
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}
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