如何动态生成文本框并收集用户输入的数据？
Moh*_*mal 5 c# vb.net asp.net textbox dynamic
我将欣赏VB或C#的答案
我们使用数据库来创建带有动态项的数据收集表单
我使用此代码从数据库中的表生成标签和文本框(当用户点击按钮"加载CRF"时)
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim CRFgrid As New GridView
CRFgrid.DataSource = CRFds
CRFgrid.DataBind()
Dim ItemCount As Integer = CRFgrid.Rows.Count
Session("Itemcount") = CRFgrid.Rows.Count
For I = 0 To (ItemCount - 1)
Dim itemname As String = CRFgrid.Rows(0 + I).Cells(1).Text.ToString
Session("Item") = "Item" + (I + 1).ToString
Dim ItemNamelabel As New Label
Dim ItemNameBox As New TextBox
ItemNamelabel.ID = "L" + (I + 1).ToString
Session("FU" + I.ToString) = ItemNamelabel.ID.ToString
ItemNameBox.ID = "T" + (I + 1).ToString
ItemNamelabel.Text = "<br />" + (Session("Item").ToString) + " " + itemname + " " + "<br />"
Me.Form.Controls.Add(ItemNamelabel)
Me.Form.Controls.Add(ItemNameBox)
Next
End Sub
加载数据收集表单时,页面如下所示
和"查看页面源"显示
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><title>
</title></head>
<body>
<form method="post" action="Default.aspx" id="form1">
<div class="aspNetHidden">
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKLTI0NTA5MDI3NGRkUb8sl0uZpLbvUN/GSmHgjYxS9xqGR7rmcMBR3Ufhz4w=" />
</div>
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWCQLf7PXOCQKM54rGBgK7q7GGCALF9vKRBQLs7+btDALs7+LtDALs797tDALs79rtDALs79btDDHrb+Vhkcph8brtCJP9//5IH57FFoImey2PApARP+k1" />
<input type="submit" name="Button1" value="LoadCRF" id="Button1" style="width:85px;" />
<br />
<br />
<input type="submit" name="Button2" value="InsertData" id="Button2" style="width:85px;" />
<br />
<br />
MRN
<input name="MRNtxt" type="text" id="MRNtxt" />
<br />
<br />
<span id="L1"><br />Item1 Diagnosis <br /></span><input name="T1" type="text" id="T1" /><span id="L2"><br />Item2 Treatment Protocol <br /></span><input name="T2" type="text" id="T2" /><span id="L3"><br />Item3 Initial CSF <br /></span><input name="T3" type="text" id="T3" /><span id="L4"><br />Item4 Location <br /></span><input name="T4" type="text" id="T4" /><span id="L5"><br />Item5 Consultant <br /></span><input name="T5" type="text" id="T5" /></form>
一旦用户填写表单并单击插入,我想使用此代码将输入的文本保存到数据库中的其他表格中.这是行不通的.你能告诉我我的错误在哪里吗？
Protected Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim mydb As New OleDbConnection
mydb =
New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source= |datadirectory|openclinica.mdb;Persist Security Info=True")
mydb.Open()
Dim Y As Integer = Session("Itemcount")
For M = 1 To Y
Session("FUt") = "L" + M.ToString
Session("FUDt") = "T" + M.ToString
Dim sqlstring = "INSERT INTO [Followup] ([MRN], [FU], [FUData]) VALUES (@MRNtxt, @" + Session("FUt") + ", @" + Session("FUDt") + ");"
Dim mydbcommand As New OleDbCommand(sqlstring, mydb)
mydbcommand.Parameters.Add("@MRNtxt", OleDbType.VarChar).Value = MRNtxt.Text
mydbcommand.Parameters.Add("@" + Session("FUt"), OleDbType.VarChar).Value = Session("FUt").Text
mydbcommand.Parameters.Add("@" + Session("FUDt"), OleDbType.VarChar).Value = Session("FUDt").Text
mydbcommand.ExecuteNonQuery()
Next
mydb.Close()
End Sub
当我点击"插入"时,错误消息看起来像这样
