小编Eka*_*ina的帖子

我有这个结构:

private readonly Dictionary<string, Dictionary<string, int>> _storage =
    new Dictionary<string, Dictionary<string, int>>();

key:Firmware(string):key:Device(string):value CountOfUsers(int)

我需要获得每个设备的用户总数,但我真的不知道如何使用LINQ.已经尝试了很多变种.请帮忙!

现在,我只使用一个完整的功能

private XlsRow2 GetTotalPerDevice(Dictionary<string, Dictionary<string, int>> storage)
    {
        XlsRow2 totalPerDeviceRow = new XlsRow2();
        totalPerDeviceRow._Name = "Grand Total";
        totalPerDeviceRow.UseBorders = true;
        foreach (var deviceModel in _allDeviceModels)
        {
            foreach (var firmware in storage)
            {
                foreach (var device in firmware.Value)
                {
                    var countOfUsers = 0;
                    if (deviceModel == device.Key)
                    {
                        countOfUsers += device.Value;

                        if (!_totalsPerDevice.ContainsKey(deviceModel))
                        {
                            _totalsPerDevice.Add(deviceModel, countOfUsers);
                        }
                        else
                        {
                            _totalsPerDevice[deviceModel] += countOfUsers;
                        }
                    }
                }
            } …

我需要在那里得到结果表 - table_name,min_date,max_date

这是我的查询,我应该为所有表执行

SELECT MIN(short_date) as FirstDuplicatedDate, MAX(short_date) as LastDuplicatedDate
FROM (SELECT  short_date, type, value,  count(*) as cnt
FROM testTable
GROUP BY  short_date
HAVING COUNT(*) > 1) as Duplicates

然后我发现了如何以这种方式获取所有表名

SELECT TABLE_NAME as name FROM `information_schema`.`TABLES`
WHERE `TABLES`.`TABLE_SCHEMA` = 'test'
AND `TABLES`.`TABLE_NAME` LIKE 'test%'

但我不知道如何为所有表执行它并在新表中填入结果.

我试着这样做

DECLARE @DB_Name varchar(50)
DECLARE @Command varchar(100);
DECLARE database_cursor CURSOR FOR 
SELECT name 
FROM (SELECT TABLE_NAME as name FROM `information_schema`.`TABLES`
WHERE `TABLES`.`TABLE_SCHEMA` = 'test'
AND `TABLES`.`TABLE_NAME` LIKE 'test%') as TableNames

OPEN database_cursor

FETCH NEXT …

我使用tesseract来检测图像上的字符。

        try
        {
            using (var engine = new TesseractEngine(@"C:\Users\ea\Documents\Visual Studio 2015\Projects\ocrtTest", "eng", EngineMode.Default))
            {
                using (var img = Pix.LoadFromFile(testImagePath))
                {
                    Bitmap src = (Bitmap)Image.FromFile(testImagePath);
                    using (var page = engine.Process(img))
                    {
                        var text = page.GetHOCRText(1);
                        File.WriteAllText("test.html", text);
                        //Console.WriteLine("Text: {0}", text);
                        //Console.WriteLine("Mean confidence: {0}", page.GetMeanConfidence());

                        int p = 0;
                        int l = 0;
                        int w = 0;
                        int s = 0;
                        int counter = 0;
                        using (var iter = page.GetIterator())
                        {
                            iter.Begin();
                            do
                            {
                                do
                                {
                                    do
                                    {
                                        do
                                        {
                                            do
                                            { …