Type of issue
Code doesn't work
Description
Console.WriteLine(”{0} is not a valid date.”, e.Value.ToString());
}
}
}
}
}
private void addNewRowButton_Click(object sender, EventArgs e)
{
this.songsDataGridView.Rows.Add();
}
private void deleteRowButton_Click(object sender, EventArgs e)
{
if (this.songsDataGridView.SelectedRows.Count > 0 &&
this.songsDataGridView.SelectedRows[0].Index !=
this.songsDataGridView.Rows.Count - 1)
{
this.songsDataGridView.Rows.RemoveAt(
this.songsDataGridView.SelectedRows[0].Index);
}
}
private void SetupLayout()
{
this.Size = new Size(600, 500);
addNewRowButton.Text = “Add Row”;
addNewRowButton.Location = new Point(10, 10);
addNewRowButton.Click += new EventHandler(addNewRowButton_Click);
using System;
using System.Windows;
using System.IO;
using System.Text;
namespace WpfApplication
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private async void Button_Click_1(object sender, RoutedEventArgs e)
{
string filename = @”C:\Example\existingfile.txt”;
char[] result;
StringBuilder builder = new StringBuilder();
using (StreamReader reader = File.OpenText(filename))
{
result = new char[reader.BaseStream.Length];
await reader.ReadAsync(result, 0, (int)reader.BaseStream.Length);
}
foreach (char c in result)
{
if (char.IsLetterOrDigit(c) || char.IsWhiteSpace(c))
{
builder.Append(c);
}
}
FileOutput.Text = builder.ToString();
}
}
}
object System.Collections.IEnumerator.Current { get; }
deleteRowButton.Text = “Delete Row”;
deleteRowButton.Location = new Point(100, 10);
deleteRowButton.Click += new EventHandler(deleteRowButton_Click);
buttonPanel.Controls.Add(addNewRowButton);
buttonPanel.Controls.Add(deleteRowButton);
buttonPanel.Height = 50;
buttonPanel.Dock = DockStyle.Bottom;
this.Controls.Add(this.buttonPanel);
}
private void SetupDataGridView()
{
this.Controls.Add(songsDataGridView);
songsDataGridView.ColumnCount = 5;
songsDataGridView.ColumnHeadersDefaultCellStyle.BackColor = Color.Navy;
songsDataGridView.ColumnHeadersDefaultCellStyle.ForeColor = Color.White;
songsDataGridView.ColumnHeadersDefaultCellStyle.Font =
new Font(songsDataGridView.Font, FontStyle.Bold);
songsDataGridView.Name = “songsDataGridView”;
songsDataGridView.Location = new Point(8, 8);
songsDataGridView.Size = new Size(500, 250);
songsDataGridView.AutoSizeRowsMode =
DataGridViewAutoSizeRowsMode.DisplayedCellsExceptHeaders;
songsDataGridView.ColumnHeadersBorderStyle =
DataGridViewHeaderBorderStyle.Single;
songsDataGridView.CellBorderStyle = DataGridViewCellBorderStyle.Single;
songsDataGridView.GridColor = Color.Black;
songsDataGridView.RowHeadersVisible = false;
songsDataGridView.Columns[0].Name = “Release Date”;
songsDataGridView.Columns[1].Name = “Track”;
songsDataGridView.Columns[2].Name = “Title”;
songsDataGridView.Columns[3].Name = “Artist”;
songsDataGridView.Columns[4].Name = “Album”;
songsDataGridView.Columns[4].DefaultCellStyle.Font =
new Font(songsDataGridView.DefaultCellStyle.Font, FontStyle.Italic);
songsDataGridView.SelectionMode =
DataGridViewSelectionMode.FullRowSelect;
songsDataGridView.MultiSelect = false;
songsDataGridView.Dock = DockStyle.Fill;
songsDataGridView.CellFormatting += new
DataGridViewCellFormattingEventHandler(
songsDataGridView_CellFormatting);
}
private void PopulateDataGridView()
{
string[] row0 = { “11/22/1968”, “29”, “Revolution 9”,
“Beatles”, “The Beatles [White Album]” };
string[] row1 = { “1960”, “6”, “Fools Rush In”,
“Frank Sinatra”, “Nice ‘N’ Easy” };
string[] row2 = { “11/11/1971”, “1”, “One of These Days”,
“Pink Floyd”, “Meddle” };
string[] row3 = { “1988”, “7”, “Where Is My Mind?”,
“Pixies”, “Surfer Rosa” };
string[] row4 = { “5/1981”, “9”, “Can’t Find My Mind”,
“Cramps”, “Psychedelic Jungle” };
string[] row5 = { “6/10/2003”, “13”,
“Scatterbrain. (As Dead As Leaves.)”,
“Radiohead”, “Hail to the Thief” };
string[] row6 = { “6/30/1992”, “3”, “Dress”, “P J Harvey”, “Dry” };
songsDataGridView.Rows.Add(row0);
songsDataGridView.Rows.Add(row1);
songsDataGridView.Rows.Add(row2);
songsDataGridView.Rows.Add(row3);
songsDataGridView.Rows.Add(row4);
songsDataGridView.Rows.Add(row5);
songsDataGridView.Rows.Add(row6);
songsDataGridView.Columns[0].DisplayIndex = 3;
songsDataGridView.Columns[1].DisplayIndex = 4;
songsDataGridView.Columns[2].DisplayIndex = 0;
songsDataGridView.Columns[3].DisplayIndex = 1;
songsDataGridView.Columns[4].DisplayIndex = 2;
}
[STAThreadAttribute()]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}public string DataMember { get; set; }
@Override
public short getShort(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.shortValue();
}
@Override
public int getInt(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.intValue();
}
@Override
public long getLong(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.longValue();
}
@Override
public float getFloat(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.floatValue();
}
@Override
public double getDouble(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.doubleValue();
}
@Override
public boolean isNull(int columnIndex) {
return mRows[mPos].get(columnIndex) == null;
}
}# Source - https://stackoverflow.com/q/418280
Posted by Greg Hewgill, modified by community. See post 'Timeline' for change history
Retrieved 2026-07-26, License - CC BY-SA 3.0
... | cat -b | sort -rn | cut -f2-# Source - https://stackoverflow.com/q/418280
Posted by Greg Hewgill, modified by community. See post ‘Timeline’ for change history
Retrieved 2026-07-26, License - CC BY-SA 3.0
... | cat -b | sort -rn | cut -f2-
Console.WriteLine(”{0} is not a valid date.”, e.Value.ToString());
}
}
}
}
}
private void addNewRowButton_Click(object sender, EventArgs e)
{
this.songsDataGridView.Rows.Add();
}
private void deleteRowButton_Click(object sender, EventArgs e)
{
if (this.songsDataGridView.SelectedRows.Count > 0 &&
this.songsDataGridView.SelectedRows[0].Index !=
this.songsDataGridView.Rows.Count - 1)
{
this.songsDataGridView.Rows.RemoveAt(
this.songsDataGridView.SelectedRows[0].Index);
}
}
private void SetupLayout()
{
this.Size = new Size(600, 500);
addNewRowButton.Text = “Add Row”;
addNewRowButton.Location = new Point(10, 10);
addNewRowButton.Click += new EventHandler(addNewRowButton_Click);
using System;
using System.Windows;
using System.IO;
using System.Text;
namespace WpfApplication
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private async void Button_Click_1(object sender, RoutedEventArgs e)
{
string filename = @”C:\Example\existingfile.txt”;
char[] result;
StringBuilder builder = new StringBuilder();
using (StreamReader reader = File.OpenText(filename))
{
result = new char[reader.BaseStream.Length];
await reader.ReadAsync(result, 0, (int)reader.BaseStream.Length);
}
foreach (char c in result)
{
if (char.IsLetterOrDigit(c) || char.IsWhiteSpace(c))
{
builder.Append(c);
}
}
FileOutput.Text = builder.ToString();
}
}
}
object System.Collections.IEnumerator.Current { get; }
deleteRowButton.Text = “Delete Row”;
deleteRowButton.Location = new Point(100, 10);
deleteRowButton.Click += new EventHandler(deleteRowButton_Click);
buttonPanel.Controls.Add(addNewRowButton);
buttonPanel.Controls.Add(deleteRowButton);
buttonPanel.Height = 50;
buttonPanel.Dock = DockStyle.Bottom;
this.Controls.Add(this.buttonPanel);
}
private void SetupDataGridView()
{
this.Controls.Add(songsDataGridView);
songsDataGridView.ColumnCount = 5;
songsDataGridView.ColumnHeadersDefaultCellStyle.BackColor = Color.Navy;
songsDataGridView.ColumnHeadersDefaultCellStyle.ForeColor = Color.White;
songsDataGridView.ColumnHeadersDefaultCellStyle.Font =
new Font(songsDataGridView.Font, FontStyle.Bold);
songsDataGridView.Name = “songsDataGridView”;
songsDataGridView.Location = new Point(8, 8);
songsDataGridView.Size = new Size(500, 250);
songsDataGridView.AutoSizeRowsMode =
DataGridViewAutoSizeRowsMode.DisplayedCellsExceptHeaders;
songsDataGridView.ColumnHeadersBorderStyle =
DataGridViewHeaderBorderStyle.Single;
songsDataGridView.CellBorderStyle = DataGridViewCellBorderStyle.Single;
songsDataGridView.GridColor = Color.Black;
songsDataGridView.RowHeadersVisible = false;
songsDataGridView.Columns[0].Name = “Release Date”;
songsDataGridView.Columns[1].Name = “Track”;
songsDataGridView.Columns[2].Name = “Title”;
songsDataGridView.Columns[3].Name = “Artist”;
songsDataGridView.Columns[4].Name = “Album”;
songsDataGridView.Columns[4].DefaultCellStyle.Font =
new Font(songsDataGridView.DefaultCellStyle.Font, FontStyle.Italic);
songsDataGridView.SelectionMode =
DataGridViewSelectionMode.FullRowSelect;
songsDataGridView.MultiSelect = false;
songsDataGridView.Dock = DockStyle.Fill;
songsDataGridView.CellFormatting += new
DataGridViewCellFormattingEventHandler(
songsDataGridView_CellFormatting);
}
private void PopulateDataGridView()
{
string[] row0 = { “11/22/1968”, “29”, “Revolution 9”,
“Beatles”, “The Beatles [White Album]” };
string[] row1 = { “1960”, “6”, “Fools Rush In”,
“Frank Sinatra”, “Nice ‘N’ Easy” };
string[] row2 = { “11/11/1971”, “1”, “One of These Days”,
“Pink Floyd”, “Meddle” };
string[] row3 = { “1988”, “7”, “Where Is My Mind?”,
“Pixies”, “Surfer Rosa” };
string[] row4 = { “5/1981”, “9”, “Can’t Find My Mind”,
“Cramps”, “Psychedelic Jungle” };
string[] row5 = { “6/10/2003”, “13”,
“Scatterbrain. (As Dead As Leaves.)”,
“Radiohead”, “Hail to the Thief” };
string[] row6 = { “6/30/1992”, “3”, “Dress”, “P J Harvey”, “Dry” };
songsDataGridView.Rows.Add(row0);
songsDataGridView.Rows.Add(row1);
songsDataGridView.Rows.Add(row2);
songsDataGridView.Rows.Add(row3);
songsDataGridView.Rows.Add(row4);
songsDataGridView.Rows.Add(row5);
songsDataGridView.Rows.Add(row6);
songsDataGridView.Columns[0].DisplayIndex = 3;
songsDataGridView.Columns[1].DisplayIndex = 4;
songsDataGridView.Columns[2].DisplayIndex = 0;
songsDataGridView.Columns[3].DisplayIndex = 1;
songsDataGridView.Columns[4].DisplayIndex = 2;
}
[STAThreadAttribute()]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}public string DataMember { get; set; }
@Override
public short getShort(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.shortValue();
}
@Override
public int getInt(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.intValue();
}
@Override
public long getLong(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.longValue();
}
@Override
public float getFloat(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.floatValue();
}
@Override
public double getDouble(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.doubleValue();
}
@Override
public boolean isNull(int columnIndex) {
return mRows[mPos].get(columnIndex) == null;
}
}# Source - https://stackoverflow.com/q/418280
Posted by Greg Hewgill, modified by community. See post 'Timeline' for change history
Retrieved 2026-07-26, License - CC BY-SA 3.0
... | cat -b | sort -rn | cut -f2-# Source - https://stackoverflow.com/q/418280
Posted by Greg Hewgill, modified by community. See post ‘Timeline’ for change history
Retrieved 2026-07-26, License - CC BY-SA 3.0
... | cat -b | sort -rn | cut -f2-
Console.WriteLine(”{0} is not a valid date.”, e.Value.ToString());
}
}
}
}
}
private void addNewRowButton_Click(object sender, EventArgs e)
{
this.songsDataGridView.Rows.Add();
}
private void deleteRowButton_Click(object sender, EventArgs e)
{
if (this.songsDataGridView.SelectedRows.Count > 0 &&
this.songsDataGridView.SelectedRows[0].Index !=
this.songsDataGridView.Rows.Count - 1)
{
this.songsDataGridView.Rows.RemoveAt(
this.songsDataGridView.SelectedRows[0].Index);
}
}
private void SetupLayout()
{
this.Size = new Size(600, 500);
addNewRowButton.Text = “Add Row”;
addNewRowButton.Location = new Point(10, 10);
addNewRowButton.Click += new EventHandler(addNewRowButton_Click);
using System;
using System.Windows;
using System.IO;
using System.Text;
namespace WpfApplication
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private async void Button_Click_1(object sender, RoutedEventArgs e)
{
string filename = @”C:\Example\existingfile.txt”;
char[] result;
StringBuilder builder = new StringBuilder();
using (StreamReader reader = File.OpenText(filename))
{
result = new char[reader.BaseStream.Length];
await reader.ReadAsync(result, 0, (int)reader.BaseStream.Length);
}
foreach (char c in result)
{
if (char.IsLetterOrDigit(c) || char.IsWhiteSpace(c))
{
builder.Append(c);
}
}
FileOutput.Text = builder.ToString();
}
}
}
object System.Collections.IEnumerator.Current { get; }
deleteRowButton.Text = “Delete Row”;
deleteRowButton.Location = new Point(100, 10);
deleteRowButton.Click += new EventHandler(deleteRowButton_Click);
buttonPanel.Controls.Add(addNewRowButton);
buttonPanel.Controls.Add(deleteRowButton);
buttonPanel.Height = 50;
buttonPanel.Dock = DockStyle.Bottom;
this.Controls.Add(this.buttonPanel);
}
private void SetupDataGridView()
{
this.Controls.Add(songsDataGridView);
songsDataGridView.ColumnCount = 5;
songsDataGridView.ColumnHeadersDefaultCellStyle.BackColor = Color.Navy;
songsDataGridView.ColumnHeadersDefaultCellStyle.ForeColor = Color.White;
songsDataGridView.ColumnHeadersDefaultCellStyle.Font =
new Font(songsDataGridView.Font, FontStyle.Bold);
songsDataGridView.Name = “songsDataGridView”;
songsDataGridView.Location = new Point(8, 8);
songsDataGridView.Size = new Size(500, 250);
songsDataGridView.AutoSizeRowsMode =
DataGridViewAutoSizeRowsMode.DisplayedCellsExceptHeaders;
songsDataGridView.ColumnHeadersBorderStyle =
DataGridViewHeaderBorderStyle.Single;
songsDataGridView.CellBorderStyle = DataGridViewCellBorderStyle.Single;
songsDataGridView.GridColor = Color.Black;
songsDataGridView.RowHeadersVisible = false;
songsDataGridView.Columns[0].Name = “Release Date”;
songsDataGridView.Columns[1].Name = “Track”;
songsDataGridView.Columns[2].Name = “Title”;
songsDataGridView.Columns[3].Name = “Artist”;
songsDataGridView.Columns[4].Name = “Album”;
songsDataGridView.Columns[4].DefaultCellStyle.Font =
new Font(songsDataGridView.DefaultCellStyle.Font, FontStyle.Italic);
songsDataGridView.SelectionMode =
DataGridViewSelectionMode.FullRowSelect;
songsDataGridView.MultiSelect = false;
songsDataGridView.Dock = DockStyle.Fill;
songsDataGridView.CellFormatting += new
DataGridViewCellFormattingEventHandler(
songsDataGridView_CellFormatting);
}
private void PopulateDataGridView()
{
string[] row0 = { “11/22/1968”, “29”, “Revolution 9”,
“Beatles”, “The Beatles [White Album]” };
string[] row1 = { “1960”, “6”, “Fools Rush In”,
“Frank Sinatra”, “Nice ‘N’ Easy” };
string[] row2 = { “11/11/1971”, “1”, “One of These Days”,
“Pink Floyd”, “Meddle” };
string[] row3 = { “1988”, “7”, “Where Is My Mind?”,
“Pixies”, “Surfer Rosa” };
string[] row4 = { “5/1981”, “9”, “Can’t Find My Mind”,
“Cramps”, “Psychedelic Jungle” };
string[] row5 = { “6/10/2003”, “13”,
“Scatterbrain. (As Dead As Leaves.)”,
“Radiohead”, “Hail to the Thief” };
string[] row6 = { “6/30/1992”, “3”, “Dress”, “P J Harvey”, “Dry” };
songsDataGridView.Rows.Add(row0);
songsDataGridView.Rows.Add(row1);
songsDataGridView.Rows.Add(row2);
songsDataGridView.Rows.Add(row3);
songsDataGridView.Rows.Add(row4);
songsDataGridView.Rows.Add(row5);
songsDataGridView.Rows.Add(row6);
songsDataGridView.Columns[0].DisplayIndex = 3;
songsDataGridView.Columns[1].DisplayIndex = 4;
songsDataGridView.Columns[2].DisplayIndex = 0;
songsDataGridView.Columns[3].DisplayIndex = 1;
songsDataGridView.Columns[4].DisplayIndex = 2;
}
[STAThreadAttribute()]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}public string DataMember { get; set; }
@Override
public short getShort(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.shortValue();
}
@Override
public int getInt(int columnIndex) {
Number num = (Number) mRows[mPos].get(columnIndex);
return num.intValue();
}
@Override
Page URL
https://learn.microsoft.com/en-us/dotnet/api/microsoft.extensions.ai.additionalpropertiesdictionary-1.enumerator.system-collections-ienumerator-current?view=net-11.0-pp#microsoft-extensions-ai-additionalpropertiesdictionary-1-enumerator-system-collections-ienumerator-current
Content source URL
https://github.com/dotnet/dotnet-api-docs-temp/blob/live/xml/Microsoft.Extensions.AI/AdditionalPropertiesDictionary`1+Enumerator.xml
Document Version Independent Id
df6b3c86-f13e-32da-58be-cc4ca54209df
Platform Id
4d08dfd9-bf92-04a6-4620-543d6f012498
Article author
@dotnet-bot
Type of issue
Code doesn't work
Description
Console.WriteLine(”{0} is not a valid date.”, e.Value.ToString());
}
}
}
}
}
using System.Windows;
using System.IO;
using System.Text;
namespace WpfApplication
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
}
object System.Collections.IEnumerator.Current { get; }
deleteRowButton.Text = “Delete Row”;
deleteRowButton.Location = new Point(100, 10);
deleteRowButton.Click += new EventHandler(deleteRowButton_Click);
}public string DataMember { get; set; }
}# Source - https://stackoverflow.com/q/418280
Posted by Greg Hewgill, modified by community. See post 'Timeline' for change history
Retrieved 2026-07-26, License - CC BY-SA 3.0
... | cat -b | sort -rn | cut -f2-# Source - https://stackoverflow.com/q/418280
Posted by Greg Hewgill, modified by community. See post ‘Timeline’ for change history
Retrieved 2026-07-26, License - CC BY-SA 3.0
... | cat -b | sort -rn | cut -f2-
Console.WriteLine(”{0} is not a valid date.”, e.Value.ToString());
}
}
}
}
}
using System.Windows;
using System.IO;
using System.Text;
namespace WpfApplication
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
}
object System.Collections.IEnumerator.Current { get; }
deleteRowButton.Text = “Delete Row”;
deleteRowButton.Location = new Point(100, 10);
deleteRowButton.Click += new EventHandler(deleteRowButton_Click);
}public string DataMember { get; set; }
}# Source - https://stackoverflow.com/q/418280
Posted by Greg Hewgill, modified by community. See post 'Timeline' for change history
Retrieved 2026-07-26, License - CC BY-SA 3.0
... | cat -b | sort -rn | cut -f2-# Source - https://stackoverflow.com/q/418280
Posted by Greg Hewgill, modified by community. See post ‘Timeline’ for change history
Retrieved 2026-07-26, License - CC BY-SA 3.0
... | cat -b | sort -rn | cut -f2-
Console.WriteLine(”{0} is not a valid date.”, e.Value.ToString());
}
}
}
}
}
using System.Windows;
using System.IO;
using System.Text;
namespace WpfApplication
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
}
object System.Collections.IEnumerator.Current { get; }
deleteRowButton.Text = “Delete Row”;
deleteRowButton.Location = new Point(100, 10);
deleteRowButton.Click += new EventHandler(deleteRowButton_Click);
}public string DataMember { get; set; }
Page URL
https://learn.microsoft.com/en-us/dotnet/api/microsoft.extensions.ai.additionalpropertiesdictionary-1.enumerator.system-collections-ienumerator-current?view=net-11.0-pp#microsoft-extensions-ai-additionalpropertiesdictionary-1-enumerator-system-collections-ienumerator-current
Content source URL
https://github.com/dotnet/dotnet-api-docs-temp/blob/live/xml/Microsoft.Extensions.AI/AdditionalPropertiesDictionary`1+Enumerator.xml
Document Version Independent Id
df6b3c86-f13e-32da-58be-cc4ca54209df
Platform Id
4d08dfd9-bf92-04a6-4620-543d6f012498
Article author
@dotnet-bot