从数据库中逐行将数据写入文本框答案

【问题标题】：Write data to textbox row by row from database从数据库中逐行将数据写入文本框
【发布时间】：2015-04-15 04:29:40
【问题描述】：

我想在表格中逐行显示数据库中的数据

如何将数据库中的数据逐行写入每个文本框

（即）日期活动1，活动2等然后下一行日期活动1，活动2等。如何编写正确的循环

我尝试获取第一行数据的代码：

private void GetActivity()
    {
        try
        {
            CON = new OracleConnection(Connection);
            CON.Open();
            OracleCommand COMMAND1 = new OracleCommand("Select ACTIVITYID,to_char(ACTIVITYDATE,'DD-MON-YYYY') as ACTIVITYDATE,TITLE,STARTTIME,ENDTIME,ACTIVITYTIME as TIMETAKEN from DAILY_ACTIVITIES1 where ACTIVITYDATE= (Select min(ACTIVITYDATE) from DAILY_ACTIVITIES1)", CON);

            OracleDataReader READER = COMMAND1.ExecuteReader();            
            int count = READER.FieldCount;

            if (READER.HasRows)
            {
                while (READER.Read())
                {
                    if (Date1TextBox.Text == "")
                    {
                        Date1TextBox.Text = READER[1].ToString();
                        Date1TextBox.Enabled = false;
                    }

                    if (D1A1TextBox.Text == "")
                    {
                        D1A1TextBox.Text = "Title:" + READER[2].ToString() + "\n";
                        D1A1TextBox.Text += "Start-time:" + READER[3].ToString() + "\n";
                        D1A1TextBox.Text += "End-time:" + READER[4].ToString() + "\n";
                        D1A1TextBox.Text += "Timetaken:" + READER[5].ToString() + "\n";
                        D1A1TextBox.Enabled = false;
                    }
                    else
                    {
                        D1A1TextBox.Enabled = false;
                    }

                    if (D1A2TextBox.Text == "")
                    {
                        D1A2TextBox.Text = "Title:" + READER[2].ToString() + "\n";
                        D1A2TextBox.Text += "Start-time:" + READER[3].ToString() + "\n";
                        D1A2TextBox.Text += "End-time:" + READER[4].ToString() + "\n";
                        D1A2TextBox.Text += "Timetaken:" + READER[5].ToString() + "\n";
                        D1A2TextBox.Enabled = false;
                    }
                    else
                    {
                        D1A2TextBox.Enabled = false;
                    }

                    if (D1A3TextBox.Text == "")
                    {
                        D1A3TextBox.Text = "Title:" + READER[2].ToString() + "\n";
                        D1A3TextBox.Text += "Start-time:" + READER[3].ToString() + "\n";
                        D1A3TextBox.Text += "End-time:" + READER[4].ToString() + "\n";
                        D1A3TextBox.Text += "Timetaken:" + READER[5].ToString() + "\n";
                        D1A3TextBox.Enabled = false;
                    }
                    else
                    {
                        D1A3TextBox.Enabled = false;
                    }

                    if (D1A4TextBox.Text == "")
                    {
                        D1A4TextBox.Text = "Title:" + READER[2].ToString() + "\n";
                        D1A4TextBox.Text += "Start-time:" + READER[3].ToString() + "\n";
                        D1A4TextBox.Text += "End-time:" + READER[4].ToString() + "\n";
                        D1A4TextBox.Text += "Timetaken:" + READER[5].ToString() + "\n";
                        D1A4TextBox.Enabled = false;
                    }
                    else
                    {
                        D1A4TextBox.Enabled = false;
                    }

                    if (D1A5TextBox.Text == "")
                    {
                        D1A5TextBox.Text = "Title:" + READER[2].ToString() + "\n";
                        D1A5TextBox.Text += "Start-time:" + READER[3].ToString() + "\n";
                        D1A5TextBox.Text += "End-time:" + READER[4].ToString() + "\n";
                        D1A5TextBox.Text += "Timetaken:" + READER[5].ToString() + "\n";
                        D1A5TextBox.Enabled = false;
                    }
                    else
                    {
                        D1A5TextBox.Enabled = false;
                    }

                    if (D1A6TextBox.Text == "")
                    {
                        D1A6TextBox.Text = "Title:" + READER[2].ToString() + "\n";
                        D1A6TextBox.Text += "Start-time:" + READER[3].ToString() + "\n";
                        D1A6TextBox.Text += "End-time:" + READER[4].ToString() + "\n";
                        D1A6TextBox.Text += "Timetaken:" + READER[5].ToString() + "\n";
                        D1A6TextBox.Enabled = false;
                    }
                    else
                    {
                        D1A6TextBox.Enabled = false;
                    }
                }
            }          
            CON.Close();
        }

        catch (Exception et)
        {
            et.ToString();
        }
    }

【问题讨论】：

kumartyr ，你从哪里得到 D1A1TextBox~D1A6TextBox？
@AngusChung 这些都是放置在表格第一行的文本框，其中 multiline = true （即）突出显示的是 D1A3textbox
我知道，但是你怎么能直接在 GetActivity() 中使用它们呢？
我在我的 webform 的 Pageload 中调用了这个方法
好的，我明白你的问题，你想要一个循环来做吗？

标签： c# asp.net datareader

【解决方案1】：

@kumartyr，根据你的需要，你不想用Gridview。

所以，我重写了 GetActivity() 函数以进行 动态文本框 访问。

private void GetActivity()
{
    try
    {
        CON = new OracleConnection(Connection);
        CON.Open();
        OracleCommand COMMAND1 = new OracleCommand("Select ACTIVITYID,to_char(ACTIVITYDATE,'DD-MON-YYYY') as ACTIVITYDATE,TITLE,STARTTIME,ENDTIME,ACTIVITYTIME as TIMETAKEN from DAILY_ACTIVITIES1 where ACTIVITYDATE= (Select min(ACTIVITYDATE) from DAILY_ACTIVITIES1)", CON);

        OracleDataReader READER = COMMAND1.ExecuteReader();
        int count = READER.FieldCount;

        if (READER.HasRows)
        {
            int i = 1;
            TextBox txtDate;
            TextBox txtDA;
            ContentPlaceHolder cph = (ContentPlaceHolder)this.Master.FindControl("MainContent");
            while (READER.Read() && i <= 6)
            {
                if (i == 1)
                {
                    txtDate = (TextBox)cph.FindControl(string.Format("Date{0}TextBox", i.ToString()));
                    txtDate.Text = READER[1].ToString();
                    txtDate.Enabled = false;
                }

                txtDA = (TextBox)cph.FindControl(string.Format("D1A{0}TextBox", i.ToString()));
                if (txtDA.Text == "")
                {
                    txtDA.Text = "Title:" + READER[2].ToString() + "\n";
                    txtDA.Text += "Start-time:" + READER[3].ToString() + "\n";
                    txtDA.Text += "End-time:" + READER[4].ToString() + "\n";
                    txtDA.Text += "Timetaken:" + READER[5].ToString() + "\n";
                }
                txtDA.Enabled = false;
                i++;
            }
        }
        CON.Close();
    }

    catch (Exception et)
    {
        et.ToString();
    }
}

【讨论】：

【解决方案2】：

使用 GridView 并将您的 OracleCommand 绑定为数据源。您可以自定义每个单元格以显示您想要的数据，而无需进行任何循环或手动添加数千个文本框。

以下是包含大量示例的文档： https://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview(v=vs.110).aspx

【讨论】：

【解决方案3】：

你在使用GridView吗？，你可以在RowDataBound事件中创建行模板并一次性绑定网格视图

这些是绑定 gridview 的简单方法。 this 就是一个很好的例子

【讨论】：