Web Forms :: Saving Empty Textbox To SQL Table?
Sep 9, 2010
I have a textbox named txtOrderDate on my web page. I have a VB.net subroutine that saves various textboxes from my web page to my SQL table using a stored procedure. If a valid date is entered into txtDate, then my save works correctly. I have a column named OrderDate in my table. This is the column I am saving txtOrderDate to. OrderDate is defined as a date column and null is allowed.
But if txtorderDate is blank, my subroutine bombs saying cannot convert string to date. I tried various things like making the value of txtDate = DBNull.value if blank but nothing works. Seems like there would be an easy way to do this.
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Sep 5, 2010
I have this code, how will I write the code so I can check if a textbox i empty? This way want work. Now it goes in if cellPhone != null all the time.
[Code]....
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Dec 11, 2011
I have a DataTable for which i do not know how many rows are there in it.. How to get the rows/columns one by one and save it in the desired SQL Table?
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Jan 29, 2011
i want to save data from three textboxes into one cloumn of database. i have there text boxes for phone no field..one for country code, 2nd for area code and third for number..
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Jan 26, 2010
I first create a Dynamic table with textboxes and other controls in the cells. A user then enter data into the controls and I try to save the entered data to an access database. but when A save button is pushed the controls are not found.
I have a basic one cell asp:table on the page called "Table1" and then I append this table by using the Controls.Add(TableBuilder()) function in the Page_Init().
How the code basically works:
Public Function TableBuilder() As Table
dim r = New System.Web.UI.WebControls.TableRow()
Dim c = New System.Web.UI.WebControls.TableCell()
a = New TextBox
a.ID = "Sunday"
c.Controls.Add(a)
r.Cells.Add(c)
Table1.Rows.Add(r)
TableBuilder = Table1
The table shows up fine but after I press the save button I look for the created control to get the value the user entered it says the control is not there.
SaveButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim txtSunday As TextBox = Master.FindControl("MainContent").FindControl(("Sunday"))
UserEnteredData = txtSunday.text
But if I call TableBuilder() at the start of the function the control is found but the value the user entered is gone.
SaveButton_Click()
TableBuilder()
Dim txtSunday As TextBox = Master.FindControl("MainContent").FindControl(("Sunday"))
UserEnteredData = txtSunday.text
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Jun 4, 2010
I am dynamically creating a table that contains a textbox in each cell. The table is put in a placeholder control. Everything displays perfectly. The problem is when I go to retrieve the values entered in the cells. I have the code to generate the table in a separate method called CreateTable(). In order for my program to find a table in the placeholder when I go to save, I have to run CreateTable() in a postback event AND in the PageLoad event. If I call CreateTable() in only one of those places and I try to save, it says the placeholder is empty and, therefore, I cannot save the textbox contents. I've tried calling CreateTable() from InitLoad but that doesn't work because it needs to reference values from three static controls: 1 dropdown, 1 listbox, and 1 calendar control, which I don't believe have had their viewstate rendered yet.
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Mar 8, 2011
Here's what I have in my ASPX file:
<form id="form1" runat="server">
<table border="1" width="100%">
<tr><td>Firstname</td><td>Lastname</td></tr>
<tr><td><%=Request.Querystring("fname")%></td></tr>
</table>
</form>
Here's what I have in my aspx.vb file:
Imports System.IO
Partial Public Class MyexcelPage
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Response.Clear()
Response.Buffer = True
Response.ContentType = "application/vnd.ms-excel"
Dim stringWriter As StringWriter = New StringWriter()
Dim htmlTextWriter As HtmlTextWriter = New HtmlTextWriter(stringWriter)
Me.RenderControl(htmlTextWriter)
Not sure what to do after this or if the above will do anything.
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Aug 28, 2010
I have in the past saved data to my SQL database using only asp:textbox control, now I have to use the input text html control instead, can I save the data from this control in a similar manner..or do I need to use a hidden field to so the data can be saved..?
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Feb 28, 2010
Code:
[code]....
I have two textboxes,Suppose I leave the textbox1 empty & press the button,Then alert is there enter value in Textbox1,When the user press ok,Focus is set to dat textbox,I want also to change the backcolor of dat textbox--I think so it is simple,Now when i enter the values in First textbox & press tab to move to second textbox,I wnat the first textbox color to be changed to white.
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May 7, 2015
When I load the login page & enter user name the textbox of the password is showing the password I want each time I enter the user name, the textbox of the password being empty and I should enter the password myself...
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Aug 11, 2010
I have a table on my web form that I need to populate at runtime. I can do this ok and add controls to it, and all works well. However in between each row in the table I am trying to insert an empty row using the following:
[Code]....
[Code]....
NOTE: The litEmpty.Text in code is assigned the non-breaking space character
Anyway when the table is created and displayed, the empty row is not displayed.
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Jul 18, 2010
How to determine whether the table is not empty?
Using reader
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Jun 16, 2010
I have a problem with regular expression because I want to validate a textbox and I want that mark the error text when the textbox be empty.
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Nov 20, 2010
I am using regex for server side validations.
I am facing a problem with regex. I want to check for sepecial characters like ><*&()%$@!~+...
I need to filter these special charecters...but the problem is in my 10 textboxes there only 3 are required...
I can submit the form without entering anything...but my regex is not allowing me to submit the form without giving a space from keyboard...
I just want to check for special charecters and empty textbox without giving a spacebar...
I just check these sites(http://regexlib.com/ and http://www.regular-expressions.info/) and read some documentation on regex...its kind of confusing....
Here is my regex for Middlename: ^[a-zA-Z''-'s]|[ ]{1,40}$ its worked but its not correct....then I changed it to ^[a-zA-Z''-'sd*]{1,40}$ this also not taking emptytextbox without giving a space...
My Goal:
In most of the textboxes I need to allow only numbers and - # _ in some textboxes....
For Address: need to allow alphabets and numbers and #-_' "
City: numbers and alphabets no special chars...
Main problem is I can write regex for most of these stuff but need to all textboxes without entering anything (empty textboxes).My work got stoped due to this.
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Mar 22, 2010
I had a page inside a master one the page is like
[Code]....
[Code]....
and my code behind
[Code]....
On debugging I noticed that no values are taken from textbox and in postback the textbox is cleared.
I worked in viewstate stuff and enabled it for the textbox and page, but with no results.
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Mar 26, 2016
i have a problem in validations. in my query
DateTime dateformat;
if (DateTime.TryParseExact(TxtDate.Text, "dd-MMM-yyyy", null, DateTimeStyles.None, out dateformat) == false)
{
lblErrMsg.Text = "Enter valid Txtdate";
return;
}
by using above query i am alert the if date entry format wrong. it is working fine but when ever if user not enter any date in TxtDate.Text then no need to alert just save datetime.minvalue. how to do it.
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Sep 20, 2010
I have a textbox in a item template field in a gridview control and a button field as a regular column
See columns below:
<asp:TemplateField>
<ItemTemplate>
<table>
<tr
valign="top">
<td
[Code]....
In this case QtyOrdered is always 1
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Mar 10, 2011
I have a table thats created dynamically, the table gets its contents from a custom class I've created that gets statistical data from a database. As the table is generated dynamically, I've put the contents class (the table data) into a session object and I populate the table initially inside a !IsPostback then on the page init I get the data from the session (its empty on the firts page load). I am now getting this error: Multiple controls with the same ID 'controlnamehere' were found. FindControl requires that controls have unique IDs. How can I avoid this?
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Aug 31, 2010
i designed a gridiview, within that ItemTemplate i drew an table then tr then some of td's, now the problem is after every row im getting one empty row. below is my code
<ItemTemplate>
<table cellspacing="0" cellpadding="0" style="border-right:1px solid Black;" >
<tr >
<td width="1%" align="center" style="border-right:1px solid Black;">
<span style="">
<asp:ImageButton ImageUrl="~/inc/img/img1.gif" runat="server"
CommandName="Expand" Style="display: none" Width="11px" />
</span>
</td>
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<asp:Label runat="server" Text='<%# Eval("data1")%>'></asp:Label> </td>
<td width="5%" >
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Jun 16, 2010
I want That validate the textbox so this no be empty I put that
"[ws]{1,50}"
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Feb 14, 2011
I need to validate textbox is not empty if check box is checked.
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Apr 26, 2010
I'm developing an aspx page with vb code.
I am trying to highlight textbox border in red instead on showing an error message in summary. I'm using a required field validator to validate the empty textbox How can i do so?
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Feb 2, 2010
I have two textboxes where the user will input integers - i need to do a validation on these textboxes: txtStartIndex should be less than txtEndIndex - this works except with either one of the textboxes is left empty/blank how can i fix this?
<td align="right">
<asp:TextBox ID="txtStartIndex" runat="server" Width="50px"></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="txtStartIndex" ErrorMessage="*" ValidationExpression="[0-9]*" ToolTip="Numeric Values Only"></asp:RegularExpressionValidator>
<td align="right">
<asp:TextBox ID="txtEndIndex" runat="server" Width="50px"></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server" ControlToValidate="txtEndIndex"ErrorMessage="*" ValidationExpression="[0-9]*" ToolTip="Numeric Values Only"></asp:RegularExpressionValidator>
<asp:CompareValidator ID="compareValidator1" ControlToValidate="txtEndIndex" ControlToCompare="txtStartIndex"Operator="GreaterThan" Type="Integer" Text="*" runat="server" ToolTip="EndIndex has to be greater than StartIndex" />
</td>
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Jan 13, 2011
I want the validation condition to be: on a pair of textboxes, to be valid as long as at least one of them isn't empty.
So I put a customvalidator on the 2nd textbox, hooked up to the following server code and client code:
<script type="text/javascript">
function ECPhoneOrEmailRequired(source, args) {
var ecPhone = document.getElementById("txtEmergencyPhone");
var ecEmail = document.getElementById("txtEmergencyEmail");
if (ecPhone.value.length < 1 && ecEmail.value.length < 1) {
args.IsValid = false;
}
else {
args.IsValid = true
}
}
</script>
Protected Sub CustomValidator1_ServerValidate(ByVal source As Object, ByVal args As System.Web.UI.WebControls.ServerValidateEventArgs)
'args.IsValid
If (txtEmergencyPhone.Text = String.Empty And txtEmergencyEmail.Text = String.Empty) Then
args.IsValid = False
Else
args.IsValid = True
End If
End Sub
From what I can tell thru breakpoints, this code works fine as long as there's something in one of the two textboxes. When both textboxes are empty, the code is never called - and so both boxes empty ends up being allowed.
So what's the correct way to validate one-or-the-other-nonempty condition?
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Nov 4, 2010
How can I replace empty space in textbox with a dash (-) before form values are inserted?
[Code]....
I also tried using the datasource's Inserting method but neither works.
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