Используйте вызывается функция с параметром
У меня есть программа на c#, где я помещаю вещи в richtextbox. Я обновляю его всякий раз, когда файл обновляется. Затем я вызываю функцию для окрашивания линий RTB. Моя проблема заключается в том, что мне нужно использовать Invoke для функции colorTextbox (), но я не могу понять, как это сделать, потому что она использует параметр.
У меня есть аналогичная вещь для setupdatagrid (), но она не использует параметр.
Любая помощь будет очень признательна.
Спасибо
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Xml;
using System.IO;
using System.Security.Permissions;
namespace xml_reader
{
public partial class Form1 : Form
{
string filename;
public Form1()
{
InitializeComponent();
setupdatagrid();
}
private void Form1_Load(object sender, EventArgs e)
{
richTextBox1.Multiline = true;
// richTextBox1.AcceptsTab = true;
richTextBox1.SelectionColor = Color.Red;
}
private void btn_read_Click(object sender, EventArgs e)
{
OpenFileDialog openFileDialog1 = new OpenFileDialog();
// Set filter options and filter index.
openFileDialog1.Filter = "XML Files (*.xml)|*.xml";
openFileDialog1.FilterIndex = 1;
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
filename = openFileDialog1.FileName;
readXML(openFileDialog1.FileName);
FileSystemWatcher watcher = new FileSystemWatcher();
string directoryName = Path.GetDirectoryName(openFileDialog1.FileName);
watcher.Path = directoryName;
watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite | NotifyFilters.FileName | NotifyFilters.DirectoryName;
// Only watch xml files.
watcher.Filter = "*.xml";
// Add event handlers.
watcher.Changed += new FileSystemEventHandler(OnChanged);
watcher.Created += new FileSystemEventHandler(OnChanged);
// Begin watching.
// timer1.Enabled = true;
// or
watcher.EnableRaisingEvents = true;
}
}
private void OnChanged(object source, FileSystemEventArgs e)
{
// Specify what is done when a file is changed, created, or deleted.
string path = e.FullPath;
Console.WriteLine("File: " + path + " " + e.ChangeType);
System.Threading.Thread.Sleep(1000);
readXML(path);
}
private void readXML(string Filename)
{
int linenumbers = 0;
string stringvalue;
string Pos = "POS";
string Pilot = "PILOT";
string laps = "LAPS";
string elapsed = "ELAPSED";
string seed = "SEED";
string fast = "FAST LAP";
string[] row;
setupdatagrid();
const string title = "POS PILOT LAPS ELAPSED SEED FAST LAP \n";
StringBuilder builder = new StringBuilder(title, 1024); // 1k is a fair starting "guess" ;-)
using (XmlTextReader reader = new XmlTextReader(Filename))
{
// The using statement ensures that reader is Closed when done.
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element: // The node is an element.
if (reader.Name == "Driver")
{
while (reader.MoveToNextAttribute()) // Read the attributes.
{
stringvalue = reader.Value;
switch (reader.Name)
{
case "position":
builder.Append(" ").Append(stringvalue).Append("\t");
Pos = stringvalue;
break;
case "name":
string longname = stringvalue.PadRight(30);
Console.WriteLine("{0} {1}", longname, longname.Length);
builder.Append(longname);
Pilot = stringvalue;
break;
case "laps":
if (string.IsNullOrWhiteSpace(stringvalue))
stringvalue = "0";
builder.Append(" ").Append(stringvalue).Append("\t\t");
laps = stringvalue;
break;
case "seed":
if (string.IsNullOrWhiteSpace(stringvalue))
stringvalue = "0.000";
builder.Append(stringvalue).Append("\t\t");
seed = stringvalue;
break;
case "elapsedTime":
if (string.IsNullOrWhiteSpace(stringvalue))
stringvalue = "0.000";
builder.Append(" ").Append(stringvalue).Append("\t\t");
elapsed = stringvalue;
break;
case "fastLap":
if (string.IsNullOrWhiteSpace(stringvalue))
stringvalue = "0.000";
stringvalue = stringvalue.PadRight(8);
builder.Append(" ").AppendLine(stringvalue);
fast = stringvalue;
linenumbers++;
break;
default:
break;
}
}
row = new string[] { Pos, Pilot, laps, elapsed, seed, fast };
// dataGridView1.Rows.Add(row);
}
break;
case XmlNodeType.Text: //Display the text in each element.
break;
case XmlNodeType.EndElement: //Display the end of the element.
break;
}
}
reader.Close();
}
// colorTextbox(linenumbers);
Action updateText;
updateText = () => richTextBox1.Text = builder.ToString();
if (richTextBox1.InvokeRequired)
richTextBox1.Invoke(updateText);
else
updateText();
}
private void colorTextbox(int lines)
{
if (this.InvokeRequired)
{
this.Invoke(new Action(() => colorTextbox()));// what is the correct Syntax?
}
else
{
int lineNumberToSelect = 0;
int start = richTextBox1.GetFirstCharIndexFromLine(lineNumberToSelect);
int length = richTextBox1.Lines[lineNumberToSelect].Length;
richTextBox1.Select(start, length);
richTextBox1.SelectionBackColor = Color.Red;
for (int i = 1; i <= lines; i += 2)
{
lineNumberToSelect = i;
start = richTextBox1.GetFirstCharIndexFromLine(i);
length = richTextBox1.Lines[i].Length;
richTextBox1.Select(start, length);
richTextBox1.SelectionBackColor = Color.Gray;
start = richTextBox1.GetFirstCharIndexFromLine(i + 1);
length = richTextBox1.Lines[i + 1].Length;
richTextBox1.Select(start, length);
richTextBox1.SelectionBackColor = Color.LightGray;
}
if (cb_DV.Checked == true)
{
this.Width = richTextBox1.Width;
this.Height = richTextBox1.Height + dataGridView1.Height + 17;
}
else
{
this.Width = richTextBox1.Width;
this.Height = richTextBox1.Height + 17;
}
}
}
private void setupdatagrid()
{
if (this.InvokeRequired)
{
this.Invoke(new Action(() => setupdatagrid()));
}
else
{
dataGridView1.Rows.Clear();
dataGridView1.ColumnCount = 6;
foreach (DataGridViewColumn c in dataGridView1.Columns)
{
c.DefaultCellStyle.Font = new Font("Courrier New", 14F, FontStyle.Bold);
}
dataGridView1.Columns[0].Name = "POS";
dataGridView1.Columns[1].Name = "PILOT";
dataGridView1.Columns[2].Name = "LAPS";
dataGridView1.Columns[3].Name = "ELAPSED";
dataGridView1.Columns[4].Name = "SEED";
dataGridView1.Columns[5].Name = "FAST LAP";
dataGridView1.ColumnHeadersDefaultCellStyle.BackColor = Color.Red;
dataGridView1.EnableHeadersVisualStyles = false;
DataGridViewColumn column = dataGridView1.Columns[0];
column.Width = 40;//POS
column.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
column = dataGridView1.Columns[1];
column.Width = 350;//PILOT
column = dataGridView1.Columns[2];
column.Width = 50;//laps
column.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
column = dataGridView1.Columns[3];
column.Width = 90;//elapsed
column.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
column = dataGridView1.Columns[4];
column.Width = 70;//seed
column.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
column = dataGridView1.Columns[5];
column.Width = 110;//fast
column.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
}
}
private void btn_font_Click(object sender, EventArgs e)
{
// Show the dialog.
FontDialog fontDialog1 = new FontDialog();
fontDialog1.Font = richTextBox1.Font;
fontDialog1.Color = richTextBox1.ForeColor;
if (fontDialog1.ShowDialog() != DialogResult.Cancel)
{
richTextBox1.Font = fontDialog1.Font;
richTextBox1.ForeColor = fontDialog1.Color;
}
}
private void btncolor_Click(object sender, EventArgs e)
{
ColorDialog colorDialog1 = new ColorDialog();
// Set the initial color of the dialog to the current text color.
colorDialog1.Color = richTextBox1.SelectionColor;
// Determine if the user clicked OK in the dialog and that the color has changed.
if (colorDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
colorDialog1.Color != richTextBox1.SelectionColor)
{
// Change the selection color to the user specified color.
richTextBox1.ForeColor = colorDialog1.Color;
}
}
private void richTextBox1_ContentsResized(object sender, ContentsResizedEventArgs e)
{
richTextBox1.Height = e.NewRectangle.Height;
}
private void timer1_Tick(object sender, EventArgs e)
{
Console.WriteLine("timer tick");
readXML(filename);
}
}
}
Что я уже пробовал:
различные варианты синтаксиса