我如何...如何解决错误“索引超出范围.必须为非负数". [英] How do i...how to solve the error "index was out of range.must be non-negative "

问题描述

我的代码是

my code is

  private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            int height = 0;
            int width = 0;
            Pen p = new Pen(Brushes.Black, 2.5f);
            #region Invoice
            e.Graphics.FillRectangle(Brushes.DarkGray, new Rectangle(25,25, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
            e.Graphics.DrawRectangle(p, new Rectangle(25,25, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
            e.Graphics.DrawString(dataGridView1.Columns[0].HeaderText.ToString(), dataGridView1.Font, Brushes.Black, new Rectangle(25,25, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
            #endregion

            #region name
            e.Graphics.FillRectangle(Brushes.DarkGray, new Rectangle(5 + dataGridView1.Columns[0].Width, 10, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
            e.Graphics.DrawRectangle(p, new Rectangle(10 + dataGridView1.Columns[0].Width, 10, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
            e.Graphics.DrawString(dataGridView1.Columns[1].HeaderText.ToString(), dataGridView1.Font, Brushes.Black, new Rectangle(10 + dataGridView1.Columns[0].Width, 10, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));
            #endregion
        }

What I have tried:

I had tried many values instead of 25

推荐答案

我的回答:

My answer:

Make the index greater than or equal to 0.

这是一个与问题质量相匹配的答案质量的完美示例.

This is a perfect example of the quality of an answer that matches the quality of the question.

例如，如果您的dataGridView1只有一列并且您正在尝试，则可能会发生这种情况.索引第二个，如下面的行

This could happen, for instance, if your dataGridView1 has just one column and you are trying to index the second one, like in the below line

报价:

e.Graphics.DrawString(dataGridView1.Columns [ 1 ].HeaderText.ToString()，dataGridView1.字体，Brushes.Black，新的Rectangle(10 + dataGridView1.Columns [0] .Width，10，dataGridView1.Columns [0] .Width，dataGridView1.Rows [0] .Height));

e.Graphics.DrawString(dataGridView1.Columns[1].HeaderText.ToString(), dataGridView1.Font, Brushes.Black, new Rectangle(10 + dataGridView1.Columns[0].Width, 10, dataGridView1.Columns[0].Width, dataGridView1.Rows[0].Height));

请参见数组教程(C#) [ ^ ].

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