我的代码打印数据网格中的问题 [英] problem in my code print datagrid

问题描述

 int i = 0;
        string[] names=new string[] {"Amey","vijay","Ranjit","Bharat","saba"};
        string[] tel = new string[] { "3232","32111","43434","3423","09221"};
        public Form1()
        {
            InitializeComponent();
            FillDataGridView();
        }
    private void FillDataGridView()
        {
            DataTable dt = new DataTable();
            DataRow dr = null;
            dt.Columns.Add("Id");
            dt.Columns.Add("Name");
            dt.Columns.Add("tel");
            for (int i = 0; i < 100 ; i++)
            {
                dr = dt.NewRow();
                dr["Id"] = i + 1;
                dr["Name"] = names[i % 5];
                dr["tel"] = tel[i % 5];
                dt.Rows.Add(dr);
            }
            dataGridView1.DataSource = dt;
        }
 private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            
            int width = 0;
            int height = 0;
            int x = 0;
            int y = 0;
            int rowheight = 0;
            int columnwidth = 0;

            StringFormat str=new StringFormat();
            str.Alignment=StringAlignment.Near;
            str.LineAlignment=StringAlignment.Center;
            str.Trimming=StringTrimming.EllipsisCharacter;
            Pen p=new Pen(Color.Black,2.5f);
            //e.Graphics.DrawRectangle(p,dataGridView1.Bounds);
            
            //printPreviewDialog1.Document=printDocument1;
            //e.Graphics.DrawString("Hi this a test print", new Font(Font.SystemFontName,10.5f), Brushes.Black, new PointF(250.0f, 250.0f));
            //e.Graphics.DrawImage((Image)bm,new Point(10,10));

            #region Draw Column 1 

            e.Graphics.FillRectangle(Brushes.LightGray, new Rectangle(100, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
            e.Graphics.DrawRectangle(Pens.Black, 100, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height);
            e.Graphics.DrawString(dataGridView1.Columns[0].HeaderText, dataGridView1.Font, Brushes.Black, new RectangleF(100, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height), str);

            #endregion

            #region Draw column 2 

            e.Graphics.FillRectangle(Brushes.LightGray, new Rectangle(100 + dataGridView1.Columns[0].Width, 100 , dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
            e.Graphics.DrawRectangle(Pens.Black, 100 + dataGridView1.Columns[0].Width, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height);
            e.Graphics.DrawString(dataGridView1.Columns[1].HeaderText, dataGridView1.Font, Brushes.Black, new RectangleF(100 + dataGridView1.Columns[0].Width, 100, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height), str);

            width = 100 + dataGridView1.Columns[0].Width;
            height = 100;
            //variable i is declared at class level to preserve the value of i if e.hasmorepages is true
            while (i < dataGridView1.Rows.Count)
            {
                if (height > e.MarginBounds.Height)
                {
                    height = 100;
                    width = 100;
                    e.HasMorePages = true;
                    return;
                }

                height += dataGridView1.Rows[i].Height;
                e.Graphics.DrawRectangle(Pens.Black, 100, height, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height);
                e.Graphics.DrawString(dataGridView1.Rows[i].Cells[0].FormattedValue.ToString(), dataGridView1.Font, Brushes.Black, new RectangleF(100, height, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height), str);

                e.Graphics.DrawRectangle(Pens.Black, 100 + dataGridView1.Columns[0].Width, height, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height);
                e.Graphics.DrawString(dataGridView1.Rows[i].Cells[1].Value.ToString(), dataGridView1.Font, Brushes.Black, new RectangleF(100 + dataGridView1.Columns[0].Width, height, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height), str);

                width += dataGridView1.Columns[0].Width;
                i++;
            }


            #endregion
}
I can not draw column 3
please help me?!

推荐答案

您似乎也没有画第2列:在整个代码中，您引用的是dataGridView1.Columns[0]始终是第一列.修复该代码，使其首先起作用，然后开始查看您的其他问题是什么！

顺便说一句:
我无法绘制第3列"没有帮助-尝试告诉我们什么是阻止您执行此操作的方法.

BTW2:
请不要在方法中的代码块中使用区域-使用注释块，或者如果代码太大，则将其移动到单独的方法中.区域对代码模块化无济于事，而对可读性却有帮助-仅当用于将相关模块分组在一起时.

You don''t appear to be drawing column 2, either: Throughout that code you refer to dataGridView1.Columns[0] which is always the first column. Fix that code so it works first, then start looking at what your other problems are!

BTW:
"I can not draw column 3" is not helpful - try telling us what isa stopping you doing it.

BTW2:
Please don''t use regions for blocks of code within a method - use comments blocks, or move the code into separate methods if it is getting too large. Regions do not help with code modularity, they help with readability - but only when used to group related modules together.

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