DataGridView使用哪个方法或事件来更新与他绑定的DataTable

Question

如题，谢谢了

Answer 1

我是用程序对dgv中的元素进行修改
如果直接更新
dgv没有办法更新到dataTable中随便点个dgv中的别的地方
就可以更新dataTable

Answer 2

?? 你操作完DGV后，没有进行 validating 验证吧……你直接从UI操作的就可以，因为UI的操作会自动触发VALIDATING事件和 VALIDATED事件，之后便会将更改更新到后台的DT中。如果你是用代码自己操作的话，你要自己去调用validate方法。

Answer 3

http://msdn.microsoft.com/zh-cn/library/system.windows.forms.control.validating.aspx

Answer 4

这个问题 问的大了  DataGridView的所有事件只要你写想关代码 都能更新DataTable  具体怎么操作就触发不同的事件来更新DataTable

Answer 5

会自动更新的，更新的时候会触发CellValueChange事件，好像是这个名字

Answer 6

在所有要再次执行的代码前面声明
DataGridView DataGridView = new DataGridView（）；试试看

Answer 7

页面代码  
 <asp:GridView ID="gdvAccounts_Bank" runat="server" AllowSorting="True" EmptyDataText="<div align=center><font color=red><br/><br/><B>没有找到相关记录</B><br/><br/></font></div>"
                            GridLines="None" Width="100%" HorizontalAlign="Center" AutoGenerateColumns="False"
                            OnRowUpdating="gdvAccounts_Bank_RowUpdating" OnRowCancelingEdit="gdvAccounts_Bank_RowCancelingEdit"
                            OnRowEditing="gdvAccounts_Bank_Editing" OnSorting="gdvAccounts_Bank_Sorting"
                            OnRowDataBound="gdvAccounts_Bank_RowDataBound" OnRowDeleting="gdvAccounts_Bank_del"
                            DataKeyNames="Id">后台代码//绑定数据源方法
    private void bind()
    {
        //获取数据源
        DataTable table = Account_BankManager.GetAccount_BanksTable();
        this.AspNetPager1.RecordCount = table.Rows.Count;        //每页的第一条数据的序号
        ViewState["FirstData"] = (this.AspNetPager1.CurrentPageIndex - 1) * this.AspNetPager1.PageSize;        //调用分页方法
        PagedDataSource pageDate = Pages.GetDataSource(table, this.AspNetPager1, (string)ViewState["SortOrder"], (string)ViewState["OrderDire"], Convert.ToString(ViewState["Where"]));
        this.gdvAccounts_Bank.DataSource = pageDate;
        this.gdvAccounts_Bank.DataBind();
    }
 #region 数据显示控件事件    //数据绑定后激发    
    protected void gdvAccounts_Bank_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        //使序号列有序的显示
        if (e.Row.RowIndex != -1)
        {
            //使下一页的序号紧跟着上一页的序号
            ViewState["FirstData"] = Convert.ToInt32(ViewState["FirstData"]) + 1;            e.Row.Cells[0].Text = ViewState["FirstData"].ToString();
        }        //如果是绑定数据行 
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
            {
                ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick",
                "javascript:return confirm('你确认要删除这条记录吗?\\n\\n同时删除其它相关信息！')");
            }
        }
    }    //修改事件
    protected void gdvAccounts_Bank_Editing(object sender, GridViewEditEventArgs e)
    {
        this.gdvAccounts_Bank.EditIndex = e.NewEditIndex;
        this.bind();
    }    //更新事件
    protected void gdvAccounts_Bank_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        //银行信息编号
        int id = Convert.ToInt32(this.gdvAccounts_Bank.DataKeys[e.RowIndex].Value.ToString());        //银行名称
        TextBox txtBankName = this.gdvAccounts_Bank.Rows[e.RowIndex].Cells[2].Controls[0] as TextBox;
        string bankName = txtBankName.Text.Trim().ToString();        //银行金额
        TextBox txtAmount = this.gdvAccounts_Bank.Rows[e.RowIndex].Cells[3].Controls[0] as TextBox;
        decimal amount = 0;
        try
        {
            amount = Convert.ToDecimal(txtAmount.Text.Trim().ToString());
        }
        catch (Exception)
        {
            this.Page.ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert('请输入数字！');</script>");
        }        //银行备注
        TextBox txtRes = this.gdvAccounts_Bank.Rows[e.RowIndex].Cells[4].Controls[0] as TextBox;
        string res = txtRes.Text.Trim().ToString();        //调用改银行信息方法
        Account_BankManager.ModifyAccount_Bank(id, bankName, amount, res);        this.gdvAccounts_Bank.EditIndex = -1;        this.bind();
    }    //取消修改事件
    protected void gdvAccounts_Bank_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        this.gdvAccounts_Bank.EditIndex = -1;
        this.bind();
    }    //删除事件
    protected void gdvAccounts_Bank_del(object sender, GridViewDeleteEventArgs e)
    {
        //获得要删除的编号
        int id = Convert.ToInt32(this.gdvAccounts_Bank.DataKeys[e.RowIndex].Value.ToString());
        //调用删除方法
        Account_BankManager.DeleteAccount_BankByID(id);
        this.bind();
    }    //字段排序事件
    protected void gdvAccounts_Bank_Sorting(object sender, GridViewSortEventArgs e)
    {
        string sPage = e.SortExpression;
        if (ViewState["SortOrder"].ToString() == sPage)
        {
            if (ViewState["OrderDire"].ToString() == "Desc")
                ViewState["OrderDire"] = "ASC";
            else
                ViewState["OrderDire"] = "Desc";
        }
        else
        {
            ViewState["SortOrder"] = e.SortExpression;
        }
        this.bind();    }
    #endregion
不知行不行