Question

我正在为C＃中的占用网格映射编写一个程序。我想改变网格单元格的颜色。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Windows.Controls;
using System.Windows;


namespace gridappl
{
    public partial class Form1 : Form
    {
        private Window mainWindow;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {


            // Create the application's main window

            mainWindow = new Window();
            mainWindow.Title = "Grid Sample";
            // Create the Grid
            Grid myGrid = new Grid();
            myGrid.Width = 600;
            myGrid.Height = 600;
            //myGrid.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
            //myGrid.VerticalAlignment = System.Windows.VerticalAlignment.Top;
            myGrid.ShowGridLines = true;


            // Define the Columns
            ColumnDefinition colDef1 = new ColumnDefinition();
            ColumnDefinition colDef2 = new ColumnDefinition();
            ColumnDefinition colDef3 = new ColumnDefinition();

            myGrid.ColumnDefinitions.Add(colDef1);
            myGrid.ColumnDefinitions.Add(colDef2);
            myGrid.ColumnDefinitions.Add(colDef3);


            // Define the Rows
            RowDefinition rowDef1 = new RowDefinition();
            RowDefinition rowDef2 = new RowDefinition();
            RowDefinition rowDef3 = new RowDefinition();

            myGrid.RowDefinitions.Add(rowDef1);
            myGrid.RowDefinitions.Add(rowDef2);
            myGrid.RowDefinitions.Add(rowDef3);



            // Add the Grid as the Content of the Parent Window Object
            mainWindow.Content = myGrid;
            mainWindow.Show();


        }
    }
}

我尝试使用如下命令：

myGrid.Background = Brushes.Azure;

myGrid.Background = System.Drawing.Brushes.Red;

但是，程序仍会抛出错误。根据我们的选择，应该怎么做才能改变网格单元的颜色？

Answer 1

for (int i = 0; i < myGrid.Rows.Count; i++)
{
       for (int j = 0; j < myGrid.Rows[i].Cells.Count; j++)
        {
            myGrid.Rows[i].Cells[j].Style.BackColor = /*color you want*/
        }
}

尝试此动态填充背景色。

或试试这个

myGrid.Background= new SolidColorBrush(Colors.Green);

Answer 2

您可以尝试以下代码：

for (int i = 0; i < myGrid.Rows.Count; i++)
            {
                myGrid.Rows[i].Cells[/*Cell you want the color*/].Style.BackColor = /*color you want*/
            }

for循环是为了你想要遍历所有行，或者你可以做

myGrid.Rows[/*specific row number*/].Cells[/*Cell you want the color*/].Style.BackColor = /*color you want*/

示例：

myGrid.Rows[0].Cells[1].Style.BackColor = Color.Red;

Answer 3

foreach (DataGridViewRow row in dgv_List.Rows)
{
  if (intcolumncunt == 2)
  {
    if(Convert.ToInt32(row.Cells[2].Value.ToString()) > Convert.ToInt32(row.Cells[3].Value.ToString()))
     {
      row.DefaultCellStyle.BackColor = Color.Red; 
     }
  }
}

在C＃中更改网格单元格的颜色

3 个答案: