继续我将程序输出从 CSV 转换为 SQLite 的传奇，我遇到了另一个问题。我正在获取一个文本文件，按行和逗号将其分解，然后将其结果放入列表中。然后，我将按照本教程学习如何使用 ADO.NET 数据集和 .NET 数据提供程序将数据插入表中，因为我之前的方法没有正确创建表。
文件中的行阅读器返回它读取 134 行，这是文件中正确的行数（顺便说一下，可以在此处找到...您将从使用它进行测试中受益）。此外，为将数据加载到数据适配器中而创建的 DataTable 对象也总共读取了 134 行。但是，当需要打开文件并查看其中的内容时（我一直在使用 wxSQLite+ 进行此操作），行并不全部存在。写入的行数各不相同，但不可避免地不是 134。此外，跨行应用的数据类型也不统一。奇数行中的数据字段与我在创建表时输入的模式保持一致，但偶数行将所有整数类型的行转换为双精度。我不太确定是什么原因造成的，并且与教程的代码有所不同，但原理应该还是一样的。这可能是一些简单而愚蠢的事情（我很棒犯了这些错误），但我的博士生导师看不出实施中有任何明显的错误。
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SQLite;
using System.IO;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
namespace C_Sharp_SQLite_Testbed{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window{
private static string fileName;
private static string dataName;
public static string[] lines;
public MainWindow(){
InitializeComponent();
}
private void btnLoad_Click(object sender, RoutedEventArgs e){
//open input file
string dateTime = DateTime.Today.ToString("dd_mm_yyyy");
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.FileName = "Document";
dlg.DefaultExt = ".txt";
dlg.Filter = "Text Documents (.txt)|*.txt";
Nullable<bool> result = dlg.ShowDialog();
string inputFilePath = dlg.FileName;
if (result == true){
//check for input in the table name textbox
if(txtTableName.GetLineLength(0) == 0){
string errorBoxText = "Please enter a name for the table.";
string caption = "Error";
MessageBox.Show(errorBoxText, caption, MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
//create save dialog box for .db file
//create output file
Microsoft.Win32.SaveFileDialog sdg = new Microsoft.Win32.SaveFileDialog();
sdg.FileName = "databaseName";
sdg.DefaultExt = ".db";
sdg.Filter = "SQLite3 Database File (.db)|*.db";
Nullable<bool> saveResult = sdg.ShowDialog();
if (saveResult == true){
string saveFileName = sdg.FileName;
string cs = string.Format("URI=file:{0}", saveFileName);
string tableName = txtTableName.Text;
int i = 0;
#region SQLite logic
#region create table
using (SQLiteConnection con = new SQLiteConnection(cs)){
con.Open();
using (SQLiteCommand cmd = new SQLiteCommand(con)){
cmd.CommandText = string.Format(@"CREATE TABLE {0} (Timestamp INTEGER PRIMARY KEY, LeftHipState INTEGER NOT NULL, LeftHipX REAL, LeftHipY REAL, LeftHipZ REAL, LeftKneeState INTEGER NOT NULL, LeftKneeX REAL, LeftKneeY REAL, LeftKneeZ REAL, LeftAnkleState INTEGER NOT NULL, LeftAnkleX REAL, LeftAnkleY REAL, LeftAnkleZ REAL, LeftFootState INTEGER NOT NULL, LeftFootX REAL, LeftFootY REAL, LeftFootZ REAL, RightHipState INTEGER NOT NULL, RightHipX REAL, RightHipY REAL, RightHipZ REAL, RightKneeState INTEGER NOT NULL, RightKneeX REAL, RightKneeY REAL, RightKneeZ REAL, RightAnkleState INTEGER NOT NULL, RightAnkleX REAL, RightAnkleY REAL, RightAnkleZ REAL, RightFootState INTEGER NOT NULL, RightFootX REAL, RightFootY REAL, RightFootZ REAL, LeftKneeFlexion REAL, LeftKneeValgus REAL, RightKneeFlexion REAL, RightKneeValgus REAL)",
txtTableName.Text);
Console.WriteLine(cmd.CommandText);
cmd.ExecuteNonQuery();
}
con.Close();
}
#endregion
using (SQLiteConnection con = new SQLiteConnection(cs)){
DataTable table = new DataTable(tableName);
#region create columns
table.Columns.Add("Timestamp", System.Type.GetType("System.String"));
//------------------------------------------------------------------
table.Columns.Add("LeftHipState", System.Type.GetType("System.Int32"));
table.Columns.Add("LeftHipX", System.Type.GetType("System.Double"));
table.Columns.Add("LeftHipY", System.Type.GetType("System.Double"));
table.Columns.Add("LeftHipZ", System.Type.GetType("System.Double"));
table.Columns.Add("LeftKneeState", System.Type.GetType("System.Int32"));
table.Columns.Add("LeftKneeX", System.Type.GetType("System.Double"));
table.Columns.Add("LeftKneeY", System.Type.GetType("System.Double"));
table.Columns.Add("LeftKneeZ", System.Type.GetType("System.Double"));
table.Columns.Add("LeftAnkleState", System.Type.GetType("System.Int32"));
table.Columns.Add("LeftAnkleX", System.Type.GetType("System.Double"));
table.Columns.Add("LeftAnkleY", System.Type.GetType("System.Double"));
table.Columns.Add("LeftAnkleZ", System.Type.GetType("System.Double"));
table.Columns.Add("LeftFootState", System.Type.GetType("System.Int32"));
table.Columns.Add("LeftFootX", System.Type.GetType("System.Double"));
table.Columns.Add("LeftFootY", System.Type.GetType("System.Double"));
table.Columns.Add("LeftFootZ", System.Type.GetType("System.Double"));
//-------------------------------------------------------------------
table.Columns.Add("RightHipState", System.Type.GetType("System.Int32"));
table.Columns.Add("RightHipX", System.Type.GetType("System.Double"));
table.Columns.Add("RightHipY", System.Type.GetType("System.Double"));
table.Columns.Add("RightHipZ", System.Type.GetType("System.Double"));
table.Columns.Add("RightKneeState", System.Type.GetType("System.Int32"));
table.Columns.Add("RightKneeX", System.Type.GetType("System.Double"));
table.Columns.Add("RightKneeY", System.Type.GetType("System.Double"));
table.Columns.Add("RightKneeZ", System.Type.GetType("System.Double"));
table.Columns.Add("RightAnkleState", System.Type.GetType("System.Int32"));
table.Columns.Add("RightAnkleX", System.Type.GetType("System.Double"));
table.Columns.Add("RightAnkleY", System.Type.GetType("System.Double"));
table.Columns.Add("RightAnkleZ", System.Type.GetType("System.Double"));
table.Columns.Add("RightFootState", System.Type.GetType("System.Int32"));
table.Columns.Add("RightFootX", System.Type.GetType("System.Double"));
table.Columns.Add("RightFootY", System.Type.GetType("System.Double"));
table.Columns.Add("RightFootZ", System.Type.GetType("System.Double"));
//-------------------------------------------------------------------
table.Columns.Add("LeftKneeFlexion", System.Type.GetType("System.Double"));
table.Columns.Add("LeftKneeValgus", System.Type.GetType("System.Double"));
table.Columns.Add("RightKneeFlexion", System.Type.GetType("System.Double"));
table.Columns.Add("RightKneeValgus", System.Type.GetType("System.Double"));
#endregion
var output = new List<MyData>();
foreach (var line in File.ReadAllLines(inputFilePath)){
output.Add(new MyData(line.Split(',')));
}
foreach (MyData outputLine in output){
DataRow row = table.NewRow();
row["Timestamp"] = outputLine.Time;
row["LeftHipState"] = outputLine.HlState;
row["LeftHipX"] = outputLine.HLX;
row["LeftHipY"] = outputLine.HLY;
row["LeftHipZ"] = outputLine.HLZ;
row["LeftKneeState"] = outputLine.KlState;
row["LeftKneeX"] = outputLine.KLX;
row["LeftKneeY"] = outputLine.KLY;
row["LeftKneeZ"] = outputLine.KLZ;
row["LeftAnkleState"] = outputLine.AlState;
row["LeftAnkleX"] = outputLine.ALX;
row["LeftAnkleY"] = outputLine.ALY;
row["LeftAnkleZ"] = outputLine.ALZ;
row["LeftFootState"] = outputLine.FlState;
row["LeftFootX"] = outputLine.FLX;
row["LeftFootY"] = outputLine.FLY;
row["LeftFootZ"] = outputLine.FLZ;
row["RightHipState"] = outputLine.HrState;
row["RightHipX"] = outputLine.HRX;
row["RightHipY"] = outputLine.HRY;
row["RightHipZ"] = outputLine.HRZ;
row["RightKneeState"] = outputLine.KrState;
row["RightKneeX"] = outputLine.KRX;
row["RightKneeY"] = outputLine.KRY;
row["RightKneeZ"] = outputLine.KRZ;
row["RightAnkleState"] = outputLine.ArState;
row["RightAnkleX"] = outputLine.ARX;
row["RightAnkleY"] = outputLine.ARY;
row["RightAnkleZ"] = outputLine.ARZ;
row["RightFootState"] = outputLine.FrState;
row["RightFootX"] = outputLine.FRX;
row["RightFootY"] = outputLine.FRY;
row["RightFootZ"] = outputLine.FRZ;
row["LeftKneeFlexion"] = outputLine.LKFX;
row["LeftKneeValgus"] = outputLine.LKVG;
row["RightKneeFlexion"] = outputLine.RKFX;
row["RightKneeValgus"] = outputLine.RKVG;
table.Rows.Add(row);
i++;
Console.WriteLine("{0}| {1} {2:N4} {3:N4} {4:N4}| {5} {6:N4} {7:N4} {8:N4}| {9} {10:N4} {11:N4} {12:N4}| {13} {14:N4} {15:N4} {16:N4}| {17} {18:N4} {19:N4} {20:N4}| {21} {22:N4} {23:N4} {24:N4}| {25} {26:N4} {27:N4} {28:N4}| {29} {30:N4} {31:N4} {32:N4}| {33:N2} {34:N2} {35:N2} {36:N2}\n",
outputLine.Time, outputLine.HlState, outputLine.HLX, outputLine.HLY, outputLine.HLZ, outputLine.KlState, outputLine.KLX, outputLine.KLY, outputLine.KLZ, outputLine.AlState, outputLine.ALX, outputLine.ALY, outputLine.ALZ, outputLine.FlState, outputLine.FLX, outputLine.FLY, outputLine.FLZ, outputLine.HrState, outputLine.HRX, outputLine.HRY, outputLine.HRZ, outputLine.KrState, outputLine.KRX, outputLine.KRY, outputLine.KRZ, outputLine.ArState, outputLine.ARX, outputLine.ARY, outputLine.ARZ, outputLine.FrState, outputLine.FRX, outputLine.FRY, outputLine.FRZ, outputLine.LKFX, outputLine.LKVG, outputLine.RKFX, outputLine.RKVG);
}
Console.WriteLine("{0}, {1}", i, table.Rows.Count);
string sql = string.Format("SELECT * FROM {0}", tableName);
using (SQLiteDataAdapter da = new SQLiteDataAdapter(sql, con)){
using (new SQLiteCommandBuilder(da)){
da.Update(table);
}
}
con.Close();
#endregion
}
}
#region
//for input file
//fileName = dlg.FileName;
//OutputConsole.Text = " ";
//OutputConsole.Text = fileName;
//for output file
//dataName = sdg.FileName;
#endregion
}
}
private void btnExit_Click(object sender, RoutedEventArgs e){
Environment.Exit(0);
}
private void btnInfo_Click(object sender, RoutedEventArgs e){
Environment.CurrentDirectory = Environment.GetEnvironmentVariable("windir");
DirectoryInfo info = new DirectoryInfo(".");
lock (info){
OutputConsole.Text = String.Format("Directory info: " + info.FullName);
}
}
}
public class MyData{
public MyData(string[] values){
Time = int.Parse(values[0]);
HlState = int.Parse(values[1]);
HLX = double.Parse(values[2]);
HLY = double.Parse(values[3]);
HLZ = double.Parse(values[4]);
KlState = int.Parse(values[5]);
KLX = double.Parse(values[6]);
KLY = double.Parse(values[7]);
KLZ = double.Parse(values[8]);
AlState = int.Parse(values[9]);
ALX = double.Parse(values[10]);
ALY = double.Parse(values[11]);
ALZ = double.Parse(values[12]);
FlState = int.Parse(values[13]);
FLX = double.Parse(values[14]);
FLY = double.Parse(values[15]);
FLZ = double.Parse(values[16]);
HrState = int.Parse(values[17]);
HRX = double.Parse(values[18]);
HRY = double.Parse(values[19]);
HRZ = double.Parse(values[20]);
KrState = int.Parse(values[21]);
KRX = double.Parse(values[22]);
KRY = double.Parse(values[23]);
KRZ = double.Parse(values[24]);
ArState = int.Parse(values[25]);
ARX = double.Parse(values[26]);
ARY = double.Parse(values[27]);
ARZ = double.Parse(values[28]);
FrState = int.Parse(values[29]);
FRX = double.Parse(values[30]);
FRY = double.Parse(values[31]);
FRZ = double.Parse(values[32]);
LKFX = double.Parse(values[33]);
LKVG = double.Parse(values[34]);
RKFX = double.Parse(values[35]);
RKVG = double.Parse(values[36]);
}
public int Time { get; set; }
public int HlState { get; set; }
public double HLX { get; set; }
public double HLY { get; set; }
public double HLZ { get; set; }
public int KlState { get; set; }
public double KLX { get; set; }
public double KLY { get; set; }
public double KLZ { get; set; }
public int AlState { get; set; }
public double ALX { get; set; }
public double ALY { get; set; }
public double ALZ { get; set; }
public int FlState { get; set; }
public double FLX { get; set; }
public double FLY { get; set; }
public double FLZ { get; set; }
public int HrState { get; set; }
public double HRX { get; set; }
public double HRY { get; set; }
public double HRZ { get; set; }
public int KrState { get; set; }
public double KRX { get; set; }
public double KRY { get; set; }
public double KRZ { get; set; }
public int ArState { get; set; }
public double ARX { get; set; }
public double ARY { get; set; }
public double ARZ { get; set; }
public int FrState { get; set; }
public double FRX { get; set; }
public double FRY { get; set; }
public double FRZ { get; set; }
public double LKFX { get; set; }
public double LKVG { get; set; }
public double RKFX { get; set; }
public double RKVG { get; set; }
}
}
它是微妙的，还是实际上是错误的？我需要解决行数问题和转换数据类型。
这是 的 XAML 代码MainWindow，因此您不必复制它：
<Window x:Class="C_Sharp_SQLite_Testbed.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid Background="LightGray">
<Button x:Name="btnLoad" Content="Load CSV File to Database" HorizontalAlignment="Left" Margin="10,258,0,0" VerticalAlignment="Top" Width="153" Click="btnLoad_Click"/>
<Button x:Name="btnExit" Content="Exit" HorizontalAlignment="Left" Margin="312,258,0,0" VerticalAlignment="Top" Width="75" Click="btnExit_Click"/>
<TextBlock x:Name="OutputConsole" HorizontalAlignment="Left" Margin="10,10,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Height="243" Width="497" Background="Black" Foreground="#FF00E800" FontFamily="Lucida Console"/>
<Button x:Name="btnInfo" Content="Directory Information" HorizontalAlignment="Left" Margin="168,258,0,0" VerticalAlignment="Top" Width="139" Click="btnInfo_Click"/>
<TextBox x:Name="txtTableName" HorizontalAlignment="Left" Height="23" Margin="200,285,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="120"/>
<Label Content="Enter name for table in database:" HorizontalAlignment="Left" Margin="10,282,0,0" VerticalAlignment="Top"/>
</Grid>
</Window>
项目类型是控制台项目，因此您需要在打开新的 WPF 项目后进行设置。
也许伴随着一个愚蠢的问题：我在写完这些文件后等待打开其中一个文件的时间是否重要？