धन्यवाद,
पद विन्सेंट लेकिन KlausG जोड़ा गया उस में कुछ सुधार भी उस ढांचे 4.0 के साथ काम करने के लिए विचार किया जाना चाहिए द्वारा बहुत अच्छा है। विंसेंट से बहुत महत्वपूर्ण
मूल वेब साइट पोस्ट: http://blogs.msdn.com/b/vinsibal/archive/2008/09/25/pasting-content-to-new-rows-on-the-wpf-datagrid.aspx
नोट: यदि आप पंक्ति नहीं जोड़ सकते सुनिश्चित करें कि आप अपने आइटम के लिए एक डिफ़ॉल्ट निर्माता है।
Updated 2018-03-06
प्रयोग
<myControl:CustomDataGrid ...
(कॉलम उपयोगकर्ता द्वारा पुन: आदेश दिया साथ डेटा ग्रिड का समर्थन करने के) CustomDataGrid
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Reflection;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
namespace HQ.Wpf.Util.MyControl
{
public class CustomDataGrid : DataGrid
{
public event ExecutedRoutedEventHandler ExecutePasteEvent;
public event CanExecuteRoutedEventHandler CanExecutePasteEvent;
// ******************************************************************
static CustomDataGrid()
{
CommandManager.RegisterClassCommandBinding(
typeof(CustomDataGrid),
new CommandBinding(ApplicationCommands.Paste,
new ExecutedRoutedEventHandler(OnExecutedPasteInternal),
new CanExecuteRoutedEventHandler(OnCanExecutePasteInternal)));
}
// ******************************************************************
#region Clipboard Paste
// ******************************************************************
private static void OnCanExecutePasteInternal(object target, CanExecuteRoutedEventArgs args)
{
((CustomDataGrid)target).OnCanExecutePaste(target, args);
}
// ******************************************************************
/// <summary>
/// This virtual method is called when ApplicationCommands.Paste command query its state.
/// </summary>
/// <param name="args"></param>
protected virtual void OnCanExecutePaste(object target, CanExecuteRoutedEventArgs args)
{
if (CanExecutePasteEvent != null)
{
CanExecutePasteEvent(target, args);
if (args.Handled)
{
return;
}
}
args.CanExecute = CurrentCell != null;
args.Handled = true;
}
// ******************************************************************
private static void OnExecutedPasteInternal(object target, ExecutedRoutedEventArgs args)
{
((CustomDataGrid)target).OnExecutedPaste(target, args);
}
// ******************************************************************
/// <summary>
/// This virtual method is called when ApplicationCommands.Paste command is executed.
/// </summary>
/// <param name="target"></param>
/// <param name="args"></param>
protected virtual void OnExecutedPaste(object target, ExecutedRoutedEventArgs args)
{
if (ExecutePasteEvent != null)
{
ExecutePasteEvent(target, args);
if (args.Handled)
{
return;
}
}
// parse the clipboard data [row][column]
List<string[]> clipboardData = HQ.Util.General.Clipboard.ClipboardHelper2.ParseClipboardData();
bool hasAddedNewRow = false;
Debug.Print(">>> DataGrid Paste: >>>");
#if DEBUG
StringBuilder sb = new StringBuilder();
#endif
int minRowIndex = Items.IndexOf(CurrentItem);
int maxRowIndex = Items.Count - 1;
int startIndexOfDisplayCol = (SelectionUnit != DataGridSelectionUnit.FullRow) ? CurrentColumn.DisplayIndex : 0;
int clipboardRowIndex = 0;
for (int i = minRowIndex; i <= maxRowIndex && clipboardRowIndex < clipboardData.Count; i++, clipboardRowIndex++)
{
if (i < this.Items.Count)
{
CurrentItem = Items[i];
BeginEditCommand.Execute(null, this);
int clipboardColumnIndex = 0;
for (int j = startIndexOfDisplayCol; clipboardColumnIndex < clipboardData[clipboardRowIndex].Length; j++, clipboardColumnIndex++)
{
// DataGridColumn column = ColumnFromDisplayIndex(j);
DataGridColumn column = null;
foreach (DataGridColumn columnIter in this.Columns)
{
if (columnIter.DisplayIndex == j)
{
column = columnIter;
break;
}
}
column?.OnPastingCellClipboardContent(Items[i], clipboardData[clipboardRowIndex][clipboardColumnIndex]);
#if DEBUG
sb.AppendFormat("{0,-10}", clipboardData[clipboardRowIndex][clipboardColumnIndex]);
sb.Append(" - ");
#endif
}
CommitEditCommand.Execute(this, this);
if (i == maxRowIndex)
{
maxRowIndex++;
hasAddedNewRow = true;
}
}
Debug.Print(sb.ToString());
#if DEBUG
sb.Clear();
#endif
}
// update selection
if (hasAddedNewRow)
{
UnselectAll();
UnselectAllCells();
CurrentItem = Items[minRowIndex];
if (SelectionUnit == DataGridSelectionUnit.FullRow)
{
SelectedItem = Items[minRowIndex];
}
else if (SelectionUnit == DataGridSelectionUnit.CellOrRowHeader ||
SelectionUnit == DataGridSelectionUnit.Cell)
{
SelectedCells.Add(new DataGridCellInfo(Items[minRowIndex], Columns[startIndexOfDisplayCol]));
}
}
}
// ******************************************************************
/// <summary>
/// Whether the end-user can add new rows to the ItemsSource.
/// </summary>
public bool CanUserPasteToNewRows
{
get { return (bool)GetValue(CanUserPasteToNewRowsProperty); }
set { SetValue(CanUserPasteToNewRowsProperty, value); }
}
// ******************************************************************
/// <summary>
/// DependencyProperty for CanUserAddRows.
/// </summary>
public static readonly DependencyProperty CanUserPasteToNewRowsProperty =
DependencyProperty.Register("CanUserPasteToNewRows",
typeof(bool), typeof(CustomDataGrid),
new FrameworkPropertyMetadata(true, null, null));
// ******************************************************************
#endregion Clipboard Paste
private void SetGridToSupportManyEditEitherWhenValidationErrorExists()
{
this.Items.CurrentChanged += Items_CurrentChanged;
//Type DatagridType = this.GetType().BaseType;
//PropertyInfo HasCellValidationProperty = DatagridType.GetProperty("HasCellValidationError", BindingFlags.NonPublic | BindingFlags.Instance);
//HasCellValidationProperty.
}
void Items_CurrentChanged(object sender, EventArgs e)
{
//this.Items[0].
//throw new NotImplementedException();
}
// ******************************************************************
private void SetGridWritable()
{
Type DatagridType = this.GetType().BaseType;
PropertyInfo HasCellValidationProperty = DatagridType.GetProperty("HasCellValidationError", BindingFlags.NonPublic | BindingFlags.Instance);
if (HasCellValidationProperty != null)
{
HasCellValidationProperty.SetValue(this, false, null);
}
}
// ******************************************************************
public void SetGridWritableEx()
{
BindingFlags bindingFlags = BindingFlags.FlattenHierarchy | BindingFlags.NonPublic | BindingFlags.Instance;
PropertyInfo cellErrorInfo = this.GetType().BaseType.GetProperty("HasCellValidationError", bindingFlags);
PropertyInfo rowErrorInfo = this.GetType().BaseType.GetProperty("HasRowValidationError", bindingFlags);
cellErrorInfo.SetValue(this, false, null);
rowErrorInfo.SetValue(this, false, null);
}
// ******************************************************************
}
}
इसके अलावा
: क्लिपबोर्ड हेल्पर:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Windows;
using System.IO;
namespace HQ.Util.General.Clipboard
{
public static class ClipboardHelper
{
public delegate string[] ParseFormat(string value);
public static List<string[]> ParseClipboardData()
{
List<string[]> clipboardData = null;
object clipboardRawData = null;
ParseFormat parseFormat = null;
// get the data and set the parsing method based on the format
// currently works with CSV and Text DataFormats
IDataObject dataObj = System.Windows.Clipboard.GetDataObject();
if ((clipboardRawData = dataObj.GetData(DataFormats.CommaSeparatedValue)) != null)
{
parseFormat = ParseCsvFormat;
}
else if((clipboardRawData = dataObj.GetData(DataFormats.Text)) != null)
{
parseFormat = ParseTextFormat;
}
if (parseFormat != null)
{
string rawDataStr = clipboardRawData as string;
if (rawDataStr == null && clipboardRawData is MemoryStream)
{
// cannot convert to a string so try a MemoryStream
MemoryStream ms = clipboardRawData as MemoryStream;
StreamReader sr = new StreamReader(ms);
rawDataStr = sr.ReadToEnd();
}
Debug.Assert(rawDataStr != null, string.Format("clipboardRawData: {0}, could not be converted to a string or memorystream.", clipboardRawData));
string[] rows = rawDataStr.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
if (rows != null && rows.Length > 0)
{
clipboardData = new List<string[]>();
foreach (string row in rows)
{
clipboardData.Add(parseFormat(row));
}
}
else
{
Debug.WriteLine("unable to parse row data. possibly null or contains zero rows.");
}
}
return clipboardData;
}
public static string[] ParseCsvFormat(string value)
{
return ParseCsvOrTextFormat(value, true);
}
public static string[] ParseTextFormat(string value)
{
return ParseCsvOrTextFormat(value, false);
}
private static string[] ParseCsvOrTextFormat(string value, bool isCSV)
{
List<string> outputList = new List<string>();
char separator = isCSV ? ',' : '\t';
int startIndex = 0;
int endIndex = 0;
for (int i = 0; i < value.Length; i++)
{
char ch = value[i];
if (ch == separator)
{
outputList.Add(value.Substring(startIndex, endIndex - startIndex));
startIndex = endIndex + 1;
endIndex = startIndex;
}
else if (ch == '\"' && isCSV)
{
// skip until the ending quotes
i++;
if (i >= value.Length)
{
throw new FormatException(string.Format("value: {0} had a format exception", value));
}
char tempCh = value[i];
while (tempCh != '\"' && i < value.Length)
i++;
endIndex = i;
}
else if (i + 1 == value.Length)
{
// add the last value
outputList.Add(value.Substring(startIndex));
break;
}
else
{
endIndex++;
}
}
return outputList.ToArray();
}
}
}
for (int j = minColumnDisplayIndex; j <= maxColumnDisplayIndex && columnDataIndex < rowData[rowDataIndex].Length; j++, columnDataIndex++)
{
if (j == maxColumnDisplayIndex)
continue;
DataGridColumn column = ColumnFromDisplayIndex(j);
column.OnPastingCellClipboardContent(Items[i], rowData[rowDataIndex][columnDataIndex]);
}
नहीं तो आप एक ArgumentOutOfRangeException जब मिलती है:CsvHelper.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using MoreLinq; // http://stackoverflow.com/questions/15265588/how-to-find-item-with-max-value-using-linq
namespace HQ.Util.General.CSV
{
public class CsvHelper
{
public static Dictionary<LineSeparator, Func<string, string[]>> DictionaryOfLineSeparatorAndItsFunc = new Dictionary<LineSeparator, Func<string, string[]>>();
static CsvHelper()
{
DictionaryOfLineSeparatorAndItsFunc[LineSeparator.Unknown] = ParseLineNotSeparated;
DictionaryOfLineSeparatorAndItsFunc[LineSeparator.Tab] = ParseLineTabSeparated;
DictionaryOfLineSeparatorAndItsFunc[LineSeparator.Semicolon] = ParseLineSemicolonSeparated;
DictionaryOfLineSeparatorAndItsFunc[LineSeparator.Comma] = ParseLineCommaSeparated;
}
// ******************************************************************
public enum LineSeparator
{
Unknown = 0,
Tab,
Semicolon,
Comma
}
// ******************************************************************
public static LineSeparator GuessCsvSeparator(string oneLine)
{
List<Tuple<LineSeparator, int>> listOfLineSeparatorAndThereFirstLineSeparatedValueCount = new List<Tuple<LineSeparator, int>>();
listOfLineSeparatorAndThereFirstLineSeparatedValueCount.Add(new Tuple<LineSeparator, int>(LineSeparator.Tab, CsvHelper.ParseLineTabSeparated(oneLine).Count()));
listOfLineSeparatorAndThereFirstLineSeparatedValueCount.Add(new Tuple<LineSeparator, int>(LineSeparator.Semicolon, CsvHelper.ParseLineSemicolonSeparated(oneLine).Count()));
listOfLineSeparatorAndThereFirstLineSeparatedValueCount.Add(new Tuple<LineSeparator, int>(LineSeparator.Comma, CsvHelper.ParseLineCommaSeparated(oneLine).Count()));
Tuple<LineSeparator, int> bestBet = listOfLineSeparatorAndThereFirstLineSeparatedValueCount.MaxBy((n)=>n.Item2);
if (bestBet != null && bestBet.Item2 > 1)
{
return bestBet.Item1;
}
return LineSeparator.Unknown;
}
// ******************************************************************
public static string[] ParseLineCommaSeparated(string line)
{
// CSV line parsing : From "jgr4" in http://www.kimgentes.com/worshiptech-web-tools-page/2008/10/14/regex-pattern-for-parsing-csv-files-with-embedded-commas-dou.html
var matches = Regex.Matches(line, @"\s?((?<x>(?=[,]+))|""(?<x>([^""]|"""")+)""|""(?<x>)""|(?<x>[^,]+)),?",
RegexOptions.ExplicitCapture);
string[] values = (from Match m in matches
select m.Groups["x"].Value.Trim().Replace("\"\"", "\"")).ToArray();
return values;
}
// ******************************************************************
public static string[] ParseLineTabSeparated(string line)
{
var matchesTab = Regex.Matches(line, @"\s?((?<x>(?=[\t]+))|""(?<x>([^""]|"""")+)""|""(?<x>)""|(?<x>[^\t]+))\t?",
RegexOptions.ExplicitCapture);
string[] values = (from Match m in matchesTab
select m.Groups["x"].Value.Trim().Replace("\"\"", "\"")).ToArray();
return values;
}
// ******************************************************************
public static string[] ParseLineSemicolonSeparated(string line)
{
// CSV line parsing : From "jgr4" in http://www.kimgentes.com/worshiptech-web-tools-page/2008/10/14/regex-pattern-for-parsing-csv-files-with-embedded-commas-dou.html
var matches = Regex.Matches(line, @"\s?((?<x>(?=[;]+))|""(?<x>([^""]|"""")+)""|""(?<x>)""|(?<x>[^;]+));?",
RegexOptions.ExplicitCapture);
string[] values = (from Match m in matches
select m.Groups["x"].Value.Trim().Replace("\"\"", "\"")).ToArray();
return values;
}
// ******************************************************************
public static string[] ParseLineNotSeparated(string line)
{
string [] lineValues = new string[1];
lineValues[0] = line;
return lineValues;
}
// ******************************************************************
public static List<string[]> ParseText(string text)
{
string[] lines = text.Split(new string[] { "\r\n" }, StringSplitOptions.None);
return ParseString(lines);
}
// ******************************************************************
public static List<string[]> ParseString(string[] lines)
{
List<string[]> result = new List<string[]>();
LineSeparator lineSeparator = LineSeparator.Unknown;
if (lines.Any())
{
lineSeparator = GuessCsvSeparator(lines[0]);
}
Func<string, string[]> funcParse = DictionaryOfLineSeparatorAndItsFunc[lineSeparator];
foreach (string line in lines)
{
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
result.Add(funcParse(line));
}
return result;
}
// ******************************************************************
}
}
ClipboardHelper2.cs
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Text.RegularExpressions;
using System.Windows;
using System.IO;
using System.Linq;
using System.Windows.Forms.VisualStyles;
using HQ.Util.General.CSV;
namespace HQ.Util.General.Clipboard
{
// Uses Clipboard in WPF (PresentationCore.dll in v4 of the framework)
public static class ClipboardHelper2
{
public delegate string[] ParseFormat(string value);
public static List<string[]> ParseClipboardData()
{
List<string[]> clipboardData = new List<string[]>();
// get the data and set the parsing method based on the format
// currently works with CSV and Text DataFormats
IDataObject dataObj = System.Windows.Clipboard.GetDataObject();
if (dataObj != null)
{
string[] formats = dataObj.GetFormats();
if (formats.Contains(DataFormats.CommaSeparatedValue))
{
string clipboardString = (string)dataObj.GetData(DataFormats.CommaSeparatedValue);
{
// EO: Subject to error when a CRLF is included as part of the data but it work for the moment and I will let it like it is
// WARNING ! Subject to errors
string[] lines = clipboardString.Split(new string[] { "\r\n" }, StringSplitOptions.None);
string[] lineValues;
foreach (string line in lines)
{
lineValues = CsvHelper.ParseLineCommaSeparated(line);
if (lineValues != null)
{
clipboardData.Add(lineValues);
}
}
}
}
else if (formats.Contains(DataFormats.Text))
{
string clipboardString = (string)dataObj.GetData(DataFormats.Text);
clipboardData = CsvHelper.ParseText(clipboardString);
}
}
return clipboardData;
}
}
}
वास्तव में एक अच्छा है। ज्यादातर काम करता है लेकिन कभी-कभी मुझे CommitEditCommand लाइन पर एक क्रैश मिलता है।निष्पादित (यह, इस); और क्रैश संदेश है "इनपुट स्ट्रिंग सही प्रारूप में नहीं थी।"। यह तब मिलता है जब मैं एक combobox का उपयोग करता हूं और यदि उसके पास कोई तत्व नहीं चुना गया है। हालांकि मैंने एमवीवीएम पैटरन का इस्तेमाल किया, लेकिन यह पेस्ट के समय कुछ की उम्मीद करेगा। लेकिन चारों ओर पकड़ने की कोशिश करना मेरी समस्या का समाधान करेगा। – batmaci
मैंने अपना वर्तमान कोड जोड़ा। मुझे लगता है कि मुझे आपके जैसी कुछ समस्याएं हैं क्योंकि बहुत बड़े बदलाव हैं। यह काम करना चाहिए, मुझे उम्मीद है। ध्यान दें कि सीएसवी प्रारूप में कभी-कभी अलग-अलग स्वाद होते हैं (विभाजक बदल सकता है: "," ";", टैब, आदि)। वास्तव में प्रदान किया गया नया कोड हमारे उत्पादन कोड में उपयोग किया जाता है और यह ठीक काम करता प्रतीत होता है। सौभाग्य ! –