当用户选择记录时,建议使用哪种方法来填充Web窗体上的所有控件？

Question

我有一个GridView控件,显示所有员工的列表.当用户从此列表中选择任何员工时,该记录将显示在Web窗体上,所有输入控件都预先填充了这些值.

我想知道这样做的任何好方法.我应该将所有输入控件绑定到任何SqlDataSource,还是应该通过从DataSet中选择值来重新填充所有输入控件.

Answer 1

首先,将GridView上的选择按钮添加为:

<asp:ButtonField Text="Select" CommandName="ViewMe" ButtonType="Button" />

然后添加OnRowCommand="RowCommand"属性GridView以在单击按钮时调用此函数并在函数后面的代码上调用此函数:

protected void RowCommand(object sender, GridViewCommandEventArgs e)
{
    // if the ViewMe command is fired
    if (e.CommandName == "ViewMe")
    {
        // go to find the index on the grid view
        int iTheIndexNow;
        if (int.TryParse(e.CommandArgument.ToString(), out iTheIndexNow))
        {
            // Set and highlight the selected
            TheGridView.SelectedIndex = iTheIndexNow;

            // do we have the table data id ?
            if (TheGridView.SelectedValue != null)
            {
                // now load the controls data using this id
                LoadValuesFromDatabaseToControls(TheGridView.SelectedValue);
            }    
        }
    }
}

我更喜欢这种命令按钮的方式,因为你可以添加比选择,编辑,甚至删除或复制更多的命令......只是因为任何原因(例如通过更改页面)可以完成索引更改,并且还需要选择.

我使用亚音速2 DAL来加载数据库中的数据.我的程序的示例代码是:

    void LoadValuesFromDatabaseToControls(string editID)
    {
        // Load it from database
        AthUserMaiListName OneRow = new AthUserMaiListName(editID);

        if (OneRow.IsNotExist)
        {
            // a custom control that show messages on top.
            uResult.addMsg("Fail to load id " + editID, MsgType.error);
            // close the view of the controls
            dbViewPanel.Visible = false;
        }
        else // else we have the data and go for show them
        {
          // show this panel that contains the controls.
          dbViewPanel.Visible = true;

          // I keep my current edit id
          lblID.Text = editID;

          // just be sure that the select exist on DrowDownList
          MyUtils.SelectDropDownList(ddlEventType, OneRow.CAddedFrom);

          txtEmail.Text = OneRow.CEmail;
          txtFirstName.Text = OneRow.CFirstName;
          txtLastName.Text = OneRow.CLastName;
          txtInsideTitle.Text = OneRow.CInsideTitle;
          txtCompanyName.Text = OneRow.CCompanyName;        

          txtCreated.Text = DateTimeRender(OneRow.CreatedOn);
          txtModified.Text = DateTimeRender(OneRow.ModifiedOn);
        }
   }