如何在即时窗口中轻松查看数据表或数据视图的内容

Visual Studio调试器附带四个标准可视化工具。这些是文本、HTML和XML可视化工具,所有这些工具都用于字符串对象,而数据集可视化工具则用于数据集、数据视图和数据表对象。

要使用它,请打断代码,将鼠标悬停在数据集上,展开“快速观察”,查看表,展开它,然后查看表[0](例如)。您将在快速观察中看到类似表1的内容,但请注意还有一个 放大镜图标 . 单击该图标,您的数据表将在网格视图中打开。

为了美化Adinas的调试器输出,我做了一些简单的格式化:

    public void DebugTable(DataTable table)
    {
        Debug.WriteLine("--- DebugTable(" + table.TableName + ") ---");
        int zeilen = table.Rows.Count;
        int spalten = table.Columns.Count;

        // Header
        for (int i = 0; i < table.Columns.Count; i++)
        {
            string s = table.Columns[i].ToString();
            Debug.Write(String.Format("{0,-20} | ", s));
        }
        Debug.Write(Environment.NewLine);
        for (int i = 0; i < table.Columns.Count; i++)
        {
            Debug.Write("---------------------|-");
        }
        Debug.Write(Environment.NewLine);

        // Data
        for (int i = 0; i < zeilen; i++)
        {
            DataRow row = table.Rows[i];
            //Debug.WriteLine("{0} {1} ", row[0], row[1]);
            for (int j = 0; j < spalten; j++)
            {
                string s = row[j].ToString();
                if (s.Length > 20) s = s.Substring(0, 17) + "...";
                Debug.Write(String.Format("{0,-20} | ", s));
            }
            Debug.Write(Environment.NewLine);
        }
        for (int i = 0; i < table.Columns.Count; i++)
        {
            Debug.Write("---------------------|-");
        }
        Debug.Write(Environment.NewLine);
    }

最好的解决方案: 您不需要Visual Studio ! 这里是我的示例输出:

SELECT PackKurz, PackName, PackGewicht FROM verpackungen

PackKurz             | PackName             | PackGewicht          | 
---------------------|----------------------|----------------------|-
BB205                | BigBag 205 kg        | 205                  | 
BB300                | BigBag 300 kg        | 300                  | 
BB365                | BigBag 365 kg        | 365                  | 
CO                   | Container, Alteru... |                      | 
EP                   | Palette              |                      | 
IBC                  | Chemikaliengefäß ... |                      | 
lose                 | nicht verpackungs... | 0                    | 
---------------------|----------------------|----------------------|-

我要做的是在我的项目中有一个带有以下代码的静态类:

    #region Dataset -> Immediate Window
public static void printTbl(DataSet myDataset)
{
    printTbl(myDataset.Tables[0]);
}
public static void printTbl(DataTable mytable)
{
    for (int i = 0; i < mytable.Columns.Count; i++)
    {
        Debug.Write(mytable.Columns[i].ToString() + " | ");
    }
    Debug.Write(Environment.NewLine + "=======" + Environment.NewLine);
    for (int rrr = 0; rrr < mytable.Rows.Count; rrr++)
    {
        for (int ccc = 0; ccc < mytable.Columns.Count; ccc++)
        {
            Debug.Write(mytable.Rows[rrr][ccc] + " | ");
        }
        Debug.Write(Environment.NewLine);
    }
}
public static void ResponsePrintTbl(DataTable mytable)
{
    for (int i = 0; i < mytable.Columns.Count; i++)
    {
        HttpContext.Current.Response.Write(mytable.Columns[i].ToString() + " | ");
    }
    HttpContext.Current.Response.Write("<BR>" + "=======" + "<BR>");
    for (int rrr = 0; rrr < mytable.Rows.Count; rrr++)
    {
        for (int ccc = 0; ccc < mytable.Columns.Count; ccc++)
        {
            HttpContext.Current.Response.Write(mytable.Rows[rrr][ccc] + " | ");
        }
        HttpContext.Current.Response.Write("<BR>");
    }
}

public static void printTblRow(DataSet myDataset, int RowNum)
{
    printTblRow(myDataset.Tables[0], RowNum);
}
public static void printTblRow(DataTable mytable, int RowNum)
{
    for (int ccc = 0; ccc < mytable.Columns.Count; ccc++)
    {
        Debug.Write(mytable.Columns[ccc].ToString() + " : ");
        Debug.Write(mytable.Rows[RowNum][ccc]);
        Debug.Write(Environment.NewLine);
    }
}
#endregion

然后我将在即时窗口中调用上述函数之一,结果也将显示在那里。 例如,如果我想查看变量“mydataset”的内容,我将调用printtbl(mydataset)。按Enter键后,结果将打印到即时窗口

public static void DebugDataSet ( string msg, ref System.Data.DataSet ds )
{
    WriteIf ( "===================================================" + msg + " START " );
    if (ds != null)
    {
        WriteIf ( msg );
        foreach (System.Data.DataTable dt in ds.Tables)
        {
            WriteIf ( "================= My TableName is  " +
            dt.TableName + " ========================= START" );
            int colNumberInRow = 0;
            foreach (System.Data.DataColumn dc in dt.Columns)
            {
                System.Diagnostics.Debug.Write ( " | " );
                System.Diagnostics.Debug.Write ( " |" + colNumberInRow + "| " );
                System.Diagnostics.Debug.Write ( dc.ColumnName + " | " );
                colNumberInRow++;
            } //eof foreach (DataColumn dc in dt.Columns)
            int rowNum = 0;
            foreach (System.Data.DataRow dr in dt.Rows)
            {
                System.Diagnostics.Debug.Write ( "\n row " + rowNum + " --- " );
                int colNumber = 0;
                foreach (System.Data.DataColumn dc in dt.Columns)
                {
                    System.Diagnostics.Debug.Write ( " |" + colNumber + "| " );
                    System.Diagnostics.Debug.Write ( dr[dc].ToString () + " " );
                    colNumber++;
                } //eof foreach (DataColumn dc in dt.Columns)
                rowNum++;
            }   //eof foreach (DataRow dr in dt.Rows)
            System.Diagnostics.Debug.Write ( " \n" );
            WriteIf ( "================= Table " + dt.TableName + " ========================= END" );
            WriteIf ( "===================================================" + msg + " END " );
        }   //eof foreach (DataTable dt in ds.Tables)
    } //eof if ds !=null 
    else
    {
        WriteIf ( "NULL DataSet object passed for debugging !!!" );
    }
} //eof method 

public static void WriteIf ( string msg )
{
    //TODO: FIND OUT ABOUT e.Message + e.StackTrace from Bromberg eggcafe
int output = System.Convert.ToInt16(System.Configuration.ConfigurationSettings.AppSettings["DebugOutput"] );
    //0 - do not debug anything just run the code 
switch (output)
{
    //do not debug anything 
    case 0:
        msg = String.Empty;
    break;
        //1 - output to debug window in Visual Studio       
        case 1:
            System.Diagnostics.Debug.WriteIf ( System.Convert.ToBoolean( System.Configuration.ConfigurationSettings.AppSettings["Debugging"] ), DateTime.Now.ToString ( "yyyy:MM:dd -- hh:mm:ss.fff --- " ) + msg + "\n" );
            break;
        //2 -- output to the error label in the master 
        case 2:
            string previousMsg = System.Convert.ToString (System.Web.HttpContext.Current.Session["global.DebugMsg"]);
            System.Web.HttpContext.Current.Session["global.DebugMsg"] = previousMsg +
            DateTime.Now.ToString ( "yyyy:MM:dd -- hh:mm:ss.fff --- " ) + msg + "\n </br>";
            break;
        //output both to debug window and error label 
        case 3:
            string previousMsg1 = System.Convert.ToString (System.Web.HttpContext.Current.Session["global.DebugMsg"] );
            System.Web.HttpContext.Current.Session["global.DebugMsg"] = previousMsg1 + DateTime.Now.ToString ( "yyyy:MM:dd -- hh:mm:ss.fff --- " ) + msg + "\n";
            System.Diagnostics.Debug.WriteIf ( System.Convert.ToBoolean( System.Configuration.ConfigurationSettings.AppSettings["Debugging"] ), DateTime.Now.ToString ( "yyyy:MM:dd -- hh:mm:ss.fff --- " ) + msg + "\n </br>" );
            break;
        //TODO: implement case when debugging goes to database 
    } //eof switch 

} //eof method WriteIf

我自己没有尝试过,但Visual Studio 2005(及更高版本)支持调试器可视化工具的概念。这允许您自定义对象在IDE中的显示方式。查看本文了解更多详细信息。

http://davidhayden.com/blog/dave/archive/2005/12/26/2645.aspx

给予 Xml Visualizer 尝试一下。 尚未尝试最新版本,但在Visual Studio 2003中,如果没有上一个版本,我将无法工作。

除了分层显示数据集之外,还有许多其他方便的功能,如筛选和选择要查看的行状态。

如果你想在任何地方得到这个…成为数据表的助手 这假设您希望捕获输出到log4net,但我所处理的优秀的开始示例只是将数据转储到控制台… 这个也有可编辑的列宽变量 最大宽度 -最终,我将从任何上下文中传递…

public static class Helpers
    {
        private static ILog Log = Global.Log ?? LogManager.GetLogger("MyLogger");
        /// <summary>
        /// Dump contents of a DataTable to the log
        /// </summary>
        /// <param name="table"></param>
        public static void DebugTable(this DataTable table)
        {
            Log?.Debug("--- DebugTable(" + table.TableName + ") ---");
            var nRows = table.Rows.Count;
            var nCols = table.Columns.Count;
            var nMaxColWidth = 32;

            // Column Headers

            var sColFormat = @"{0,-" + nMaxColWidth + @"} | ";
            var sLogMessage = string.Empty;
            for (var i = 0; i < table.Columns.Count; i++)
            {
                sLogMessage = string.Concat(sLogMessage, string.Format(sColFormat, table.Columns[i].ToString()));
            }
            //Debug.Write(Environment.NewLine);
            Log?.Debug(sLogMessage);

            var sUnderScore = string.Empty;
            var sDashes = string.Empty;
            for (var j = 0; j <= nMaxColWidth; j++)
            {
                sDashes = sDashes + "-";
            }


            for (var i = 0; i < table.Columns.Count; i++)
            {
                sUnderScore = string.Concat(sUnderScore, sDashes + "|-");
            }

            sUnderScore = sUnderScore.TrimEnd('-');

            //Debug.Write(Environment.NewLine);
            Log?.Debug(sUnderScore);

            // Data
            for (var i = 0; i < nRows; i++)
            {
                DataRow row = table.Rows[i];
                //Debug.WriteLine("{0} {1} ", row[0], row[1]);
                sLogMessage = string.Empty;

                for (var j = 0; j < nCols; j++)
                {
                    string s = row[j].ToString();
                    if (s.Length > nMaxColWidth) s = s.Substring(0, nMaxColWidth - 3) + "...";
                    sLogMessage = string.Concat(sLogMessage, string.Format(sColFormat, s));
                }

                Log?.Debug(sLogMessage);
                //Debug.Write(Environment.NewLine);
            }           
            Log?.Debug(sUnderScore);
        }
}