change color3

两种方法

第一种

DataGridview1.Rows[i].DefultCellStyle.backcolor

第二种

AlternatingRowsDefutCellstyle 属性

获取或设置应用于DataGridview的奇数行的默认单元格样式。

 

RowsDefultCellStyle 属性

  获取或设置应用于DataGridview的行单元格的默认样式。

 

        private void Form1_Load(object sender, EventArgs e)

        {

            string str = "server=192.168.100.222;user=sa;pwd=p@ssw1rd;database=pwd1";

            SqlConnection mycon = new SqlConnection(str);

            try

            {

                mycon.Open();

                DataSet mydt = new System.Data.DataSet();//建立填充数据库

                SqlDataAdapter mydpt = new SqlDataAdapter("select * from book",mycon);//建立适配器

                mydpt.Fill(mydt);

                dataGridView1.DataSource = mydt.Tables[0];//数据源绑定的是表不是数据库，所以要指定表，索引值从0开始  说明book这个表是数据库中第一个表

 

                for (int i = 0; i < dataGridView1.Rows.Count; i++)

                {

                    if (i % 2 == 0)

                    {

                        this.dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.Beige;

                    }

                    else

                    {

                        this.dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.Red;

                     

                    }

                }

 

            }

            catch (Exception ex)

            {

 

                MessageBox.Show(ex.Message);

            }

            finally

            {

                mycon.Close();

             

            }

        }