C#通用重写dataGrid标题函数

        private void Form1_Load(object sender, System.EventArgs e)
        ...{
            DataTable dt = new DataTable("test");
            dt.Columns.Add("col1",typeof(string));
            DataColumn dc = new DataColumn("sys_id",typeof(int));
            dc.AutoIncrement = true;
            dc.AutoIncrementSeed = 1;
            dc.AutoIncrementStep = 1;
            dt.Columns.Add(dc);
            dt.Columns.Add("col2",typeof(string));
            DataColumn dc2 = new DataColumn("col3",typeof(Boolean));
            dc2.DefaultValue = false;
            dt.Columns.Add(dc2);
            dt.Columns.Add("col4",typeof(decimal));
            dt.Columns.Add("col5",typeof(System.DateTime));

            DataRow dr = dt.NewRow();
            dr["col1"] = "test";
            dr["col2"] = "col2";
            try
            ...{
                dr["col3"] = true;
            }
            catch(Exception ex)
            ...{
                MessageBox.Show(ex.ToString());
            }
            dr["col4"] = 1.2;
            dr["col5"] = DateTime.Today;
            dt.Rows.Add(dr);

            DataRow dr2 = dt.NewRow();
            dr2["col1"] = "test";
            dr2["col2"] = "col2";
            dr2["col3"] = false;
            dr2["col4"] = 5;
            dr2["col5"] = DateTime.Now;
            dt.Rows.Add(dr2);

            dataGrid1.DataSource = dt;

            string[] col_map,col_name;
            col_map = new string[6]...{"col1","col2","col3","sys_id","col4","col5"};
            col_name = new string[6]...{"测试一","测试二","正确/错误","系统编号","金额","时间"};
            set_styles(dataGrid1,col_map,col_name);
        }
        private void set_styles(DataGrid dg,string[] col_map,string[] col_name)
        ...{
            DataGridTableStyle dts = new DataGridTableStyle();
            DataTable dt = null;
            int num_col =0;
            string str_db_type;
            int li_i;
            if(dg.DataSource is DataView)
            ...{
                dt = (dg.DataSource as DataView).Table;
            }
            else if(dg.DataSource is DataTable)
            ...{
                dt = dg.DataSource as DataTable;
            }
            else if(dg.DataSource is DataSet)
            ...{
                dt = (dg.DataSource as DataSet).Tables[0];
            }
            dts.MappingName = dt.TableName;
            num_col = col_map.Length;
            DataGridTextBoxColumn dgbc;
            DataGridBoolColumn dgbl;
            for(li_i = 0;li_i<num_col;li_i++)
            ...{
                str_db_type = dt.Columns[col_map[li_i].ToString().Trim()].DataType.ToString();
                //MessageBox.Show(str_db_type);
                if(str_db_type == "System.Boolean")
                ...{
                    dgbl = new DataGridBoolColumn();
                    dgbl.HeaderText = col_name[li_i];
                    dgbl.MappingName = col_map[li_i];
                    dts.AlternatingBackColor = Color.Teal;
                    dts.GridColumnStyles.Add(dgbl);
                }
                else
                ...{
                    dgbc = new DataGridTextBoxColumn();
                    dgbc.HeaderText = col_name[li_i];
                    dgbc.MappingName = col_map[li_i];
                    dgbc.Alignment = HorizontalAlignment.Center;
                    dts.AlternatingBackColor = Color.Teal;
                    dts.GridColumnStyles.Add(dgbc);
                }
            }
            dg.TableStyles.Add(dts);
        }

        private void button1_Click(object sender, System.EventArgs e)
        ...{
            DataTable dt;
            dt = dataGrid1.DataSource as DataTable;
            DataRow dr = dt.NewRow();
            dt.Rows.Add(dr);
        }