提示我没有找到适合的方法来重写是怎么回事啊？

Question

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.IO;
using Base;namespace 生产物流
{
    public partial class Frm_销售单 : Base.Frm_zhcb
    {
        private LinkDataBase link = new LinkDataBase();        private DataTable myTable0, myTable1;
        private DataRow myRow0, myRow1;        private DataSet myDataSet = new DataSet();
        private string tableName1, tableName2, strSQL1, strSQL2;
        public Frm_销售单()
        {
            InitializeComponent();
        }        private void Frm_销售单_Load(object sender, EventArgs e)
        {
            base.DataList();
            MessageBox.Show("姓名，权限，身份 = '" + publicbl.M姓名 + "'，'" + publicbl.M权限 + "'，'" + publicbl.M身份 + "'");              this.fzgx();            DataRelation drl = new DataRelation("主从表", parentcol, childcol, false);            base.ds.Relations.Add(drl);            if ((publicbl.M权限 == "4") || (publicbl.M权限 == "7"))
            {
                //base.btn_Save.Enabled = false;
                //this.btn_Save.Enabled = true;       
                base.btn_Del1.Enabled = false;
                base.btn_Del2.Enabled = false;
                base.btn_Qz.Enabled = false;
                 base.btn_Count.Enabled = false;
                base.btn_Cg.Text = "入库存档";
            }
            else
            {
                base.btn_Cg.Enabled = false;
            }            if (publicbl.M身份 == "0")  　     
            {
                btn_Qz.Text = "营销员签字";    
            }
            else
            {
                btn_Qz.Text = "营销领导签字";  
            }            this.MyDataSource();
            if (myDataSet != null)
            {
                this.MyDataGridView();
            }
        }
        private void MyDataSource()
        {
            tableName1 = "客户商信息表";
            tableName2 = "产品信息表";
            strSQL1 = "SELECT * FROM 客户商信息表";
            strSQL2 = "SELECT * FROM 产品信息表";            this.myDataSet.Clear();
            this.myDataSet = link.RunSelect(strSQL1, tableName1); 
            this.myDataSet = link.RunSelect(strSQL2, tableName2);
        }
        private void MyDataGridView() 
        {
            dataGridView1.AutoGenerateColumns = false;
            dataGridView2.AutoGenerateColumns = false;            dataGridView1.AllowUserToOrderColumns = true;
            dataGridView2.AllowUserToOrderColumns = true;            dataGridView1.AlternatingRowsDefaultCellStyle.BackColor = SystemColors.InactiveCaptionText;
            dataGridView2.AlternatingRowsDefaultCellStyle.BackColor = SystemColors.InactiveCaptionText;
 
            dataGridView1.MultiSelect = false;
            dataGridView2.MultiSelect = false;            dataGridView1.SelectionMode = DataGridViewSelectionMode.CellSelect;
            dataGridView2.SelectionMode = DataGridViewSelectionMode.CellSelect;            dataGridView1.RowTemplate.Height = 30;
            dataGridView2.RowTemplate.Height = 30;            dataGridView1.VirtualMode = true;
            dataGridView2.VirtualMode = true;            DataGridViewComboBoxColumn col名称 = new DataGridViewComboBoxColumn();            col名称.DataPropertyName = "名称";            col名称.DataSource = myDataSet.Tables["客户商信息表"];
            col名称.ValueMember = "名称";
            col名称.DisplayMember = "名称";
            col名称.HeaderText = "客户商";　
            col名称.Name = "名称";
            col名称.ReadOnly = false;
            col名称.Width = 120;            dataGridView1.Columns.Add(col名称);            DataGridViewTextBoxColumn col销售日期 = new DataGridViewTextBoxColumn();            col销售日期.AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells;            col销售日期.DataPropertyName = "销售日期";            col销售日期.DefaultCellStyle.Format = "yyyy-MM-dd";
            col销售日期.HeaderText = "销售日期";
            col销售日期.Name = "销售日期";
            col销售日期.ReadOnly = true;            dataGridView1.Columns.Add(col销售日期);            DataGridViewComboBoxColumn col品名 = new DataGridViewComboBoxColumn();            col品名.DataPropertyName = "品名";            col品名.DataSource = myDataSet.Tables["产品信息表"];
            col品名.ValueMember = "品名";
            col品名.DisplayMember = "品名";
            col品名.HeaderText = "品名";　      
            col品名.Name = "品名";
            col品名.ReadOnly = false;
            col品名.Width = 120;            dataGridView2.Columns.Add(col品名);        }
        protected override void OverName()
        {
            base.OverName();
            sendTableName1 = "销售单";
            sendTableName2 = "销售单明细";
            sendStrSQL1 = "SELECT * FROM 销售单";
            sendStrSQL2 = "SELECT * FROM 销售单明细";            this.Text = "销售合同单窗口";
            GBox1.Text = "销售单";
            GBox2.Text = "销售单明细";
        }
        protected override void fzgx()
        {
            base.fzgx();
            parentcol = ds.Tables["销售单"].Columns["销售单号"];
            childcol = ds.Tables["销售单明细"].Columns["销售单号"];
        }
        protected override void qianzi()
        {
            base.qianzi();
            if (publicbl.M身份 == "0")      
            {
                link.UpdateDataBase("Update 销售单 Set 营销员 = '" + publicbl.M姓名 + "'");             }
            else
            {
                link.UpdateDataBase("Update 销售单 Set 领导签字 = '" + publicbl.M姓名 + "'");              }            base.DataList(); 
        }
        protected override void jsje()
        {
            base.jsje();
            base.jsje();            base.RowNumber1 = dataGridView1.Rows.Count;
            base.RowNumber2 = dataGridView2.Rows.Count;            this.dataGridView1.CurrentCell = this.dataGridView1[0, 1];
            this.dataGridView2.CurrentCell = this.dataGridView2[0, 1];
            try
            {
                for (i = 0; i < RowNumber1 - 1; i++)      
                {
                    s = 0.0m;     
                    this.myTable0 = base.ds.Tables[0];   
                    this.myRow0 = myTable0.Rows[i];   
                    M单据号 = (int)myRow0[0];                                for (j = 0; j < RowNumber2 - 1; j++)   
                    {
                        this.myTable1 = base.ds.Tables[1];  
                        this.myRow1 = myTable1.Rows[j];    
                        M单号 = (int)myRow1[1];                                     M金额 = 0.0m;                       
                        
                        if (M单号 == M单据号)
                        {
                            M进价 = (decimal)myRow1[4];
                            M数量 = (int)myRow1[5];
                            M金额 = M进价 * M数量;
                            this.dataGridView2.Rows[j].Cells[6].Value = M金额;
                        }
                        
                        s = s + M金额;
                    }  
                    this.dataGridView1.Rows[i].Cells[6].Value = s;
                }  
                base.DataSave();
                base.DataList(); 
            }  
            catch (Exception ex)
            {
                MessageBox.Show("计算金额失败！原因是 " + ex.Message.ToString(), "请注意！");
            } 
        }
        protected override void ckgl()
        {
            base.ckgl();
            if ((publicbl.M权限 == "4") || (publicbl.M权限 == "7")) 
            {                link.UpdateDataBase("Update 销售单 Set 仓管员 = '" + publicbl.M姓名 + "'");
                base.DataList();                   if (MessageBox.Show("仓管员签字成功，按确认键办理出库！",  
                 "确认", MessageBoxButtons.YesNo) == DialogResult.Yes)
                {
                    try
                    {                        base.DataList();    
                        MessageBox.Show("办理成品出库成功，数据表已清空！");                      }
                    catch (Exception ex)
                    {                        MessageBox.Show("办理成品出库手续失败!原因是：" + ex.Message.ToString(), "请注意！");
                    }
                }            }
            else
            {
                MessageBox.Show("你无权使用此按钮的操作！");
            }
        }        private void Btn_Save_Click(object sender, EventArgs e)
        {
            //this.btn_Save.Enabled = true;          }
         }
}

Answer 1

我新建一个窗体Frm_合同，然后把代码Frm_销售单改成Frm_合同，就会提示我“生产物流.Frm_合同.Dispose(bool)”: 没有找到适合的方法来重写。
错误在Frm_合同.Designer.cs这个文件 错误代码如下
我是新手啊不要解释的太深奥了
namespace 生产物流
{
    partial class Frm_合同
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }        #region Windows 窗体设计器生成的代码        /// <summary>
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.SuspendLayout();
            // 
            // Form2
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(292, 269);
            this.Name = "Form2";
            this.Text = "Form2";
            this.Load += new System.EventHandler(this.Form2_Load);
            this.ResumeLayout(false);        }        #endregion
    }
}

Answer 2

partial class Frm_合同
两个文件的类名称不一样，没有改完全