/// <summary>
/// 合并文件
/// </summary>
private async void ExecuteMergeLibraryCommand()
{
IsEnabled = false;
bool error = IsPathValid(SourceDirectory, MergePath);
if (error)
{
List<String> fileList = new List<string>();
DirectoryInfo theFolder = new DirectoryInfo(SourceDirectory);
FileInfo[] fileInfo = theFolder.GetFiles("*.lib", SearchOption.TopDirectoryOnly);
foreach (FileInfo File in fileInfo) //遍历文件
{
string _datasource = string.Format("data source={0}", File.FullName);
if (ValidateDataBase.Validate(_datasource))
{
fileList.Add(File.FullName);
}
else
{
MessageBoxPlus.Show(App.Current.MainWindow, string.Format("文件“{0}”已加密或者它不是一个有效的库文件", File.FullName), "错误", MessageBoxButton.OK, MessageBoxImage.Error);
IsEnabled = true;
return;
}
}
if (fileList.Count==1)
{
MessageBoxPlus.Show(App.Current.MainWindow, "至少两个库才能合并", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
IsEnabled = true;
return;
}
DataTable[] dts = new DataTable[fileList.Count];
for (int i = 0; i < fileList.Count; i++)
{
using (SQLiteConnection conn = new SQLiteConnection(string.Format("data source={0}", fileList[i])))
{
using (SQLiteCommand cmd = new SQLiteCommand())
{
cmd.Connection = conn;
conn.Open();
SQLiteHelper sh = new SQLiteHelper(cmd);
dts[i] = sh.Select("select * from QuestionInfo");
conn.Close();
}
}
}
bool isSame = false;
int j;
for (j = 1; j < dts.Length; j++)
{
isSame = CompareDataTable(dts[0], dts[j]);
if (!isSame)
{
break;
}
}
if (!isSame)
{
MessageBoxPlus.Show(App.Current.MainWindow, string.Format("“{0}”与“{1}”的问卷结构不一致，无法合并！", Path.GetFileName(fileList[0]), Path.GetFileName(fileList[j])), "错误", MessageBoxButton.OK, MessageBoxImage.Warning);
}
else
{
using (SQLiteConnection conn = new SQLiteConnection(string.Format("data source={0}", fileList[0])))
{
using (SQLiteCommand cmd = new SQLiteCommand())
{
cmd.Connection = conn;
conn.Open();
SQLiteHelper sh = new SQLiteHelper(cmd);
if (File.Exists(MergePath))
{
try
{
File.Delete(MergePath);
Visibility = "Visible";
File.Copy(fileList[0], MergePath);
Progress = 1 * 100.0 / fileList.Count;
ProgressMessage = string.Format("已完成 {0:0.0}%", Progress);
}
catch (Exception e)
{
MessageBoxPlus.Show(App.Current.MainWindow, e.Message, "错误", MessageBoxButton.OK, MessageBoxImage.Error);
LogWritter.Log(e, "合库错误");
IsEnabled = true;
return;
}
}
else
{
Visibility = "Visible";
File.Copy(fileList[0], MergePath);
}
}
}
await Task.Run(() =>
{
using (SQLiteConnection conn = new SQLiteConnection(string.Format("data source={0}", MergePath)))
{
using (SQLiteCommand cmd = new SQLiteCommand())
{
cmd.Connection = conn;
conn.Open();
SQLiteHelper sh = new SQLiteHelper(cmd);
int recordCount;
try
{
recordCount = sh.ExecuteScalar<int>("select max(A_Record) from QuestionAnwser");
}
catch (Exception e)
{
MessageBoxPlus.Show(App.Current.MainWindow, "记录为空！", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
LogWritter.Log(e, "合库时记录为空");
IsEnabled = true;
return;
}
//创建临时表
sh.Execute("create table temp as select * from QuestionAnwser where 1=0");
for (int i = 1; i < fileList.Count; i++)
{
string dataBase = "db";
sh.AttachDatabase(fileList[i], dataBase);
int _recordCount = sh.ExecuteScalar<int>("select max(A_Record) from db.QuestionAnwser");
sh.Execute("insert into temp select * from db.QuestionAnwser");
sh.Execute(string.Format("Update temp set A_record=A_record+{0}", recordCount));
sh.Execute("insert into QuestionAnwser select * from temp");
sh.Execute("delete from temp");
sh.DetachDatabase(dataBase);
recordCount = recordCount + _recordCount;
Progress = (i + 1) * 100.0 / fileList.Count;
ProgressMessage = string.Format("已完成 {0:0.0}%", Progress);
}
sh.Execute("drop table temp");
conn.Close();
Visibility = "Hidden";
}
}
});
MessageBoxPlus.Show(App.Current.MainWindow, "合并成功", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
}
}
IsEnabled = true;
}