Forms Data Controls :: Retain Values In A FormView When Validations Fails Or The SQL Fails On An Insert?
Oct 6, 2010
To me this should be much easier, but I can't seem to retain the values that are put in the Insert template upon a validation failure or when the sql fails. This will prevent the user from having to retype everything agin in the event of a failure.
As you can see I am using the Sub Insert_Click and not using an insert through the wizard. so the fields are unbound textboxes on the form. There are 2 dropdowns that provide choices for the other fields.
I pasted in the code using the text only option becuase the format was getting messed up. I probably need more background on why the fields are blanking out.
[code]....
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Jan 5, 2010
I have a formview on a web page, set to insert mode as default. The form view is bound to a SQLDatasource. This datasource has a custom query written to select the details for this formview. The query joins two tables to provide relevant detail and not just an ID for one of the elements on the form view.
The first tabe contains information regarding projects and the second table contains detail regarding Resources. First table has the following definition:
[Code]....
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Jan 18, 2011
I have a formview tied to a gridview. The formview shows the data for the row selected in the gridview. The formview is invisible by default , default mode is readonly and becomes visible only on Selecting a row in the gridview. I make it visible in the SelectedIndexchanged event of the gridview. There are Insert and update buttons present outside the formview which perform the insert and update using code-behind. The code is below.
AFter an insert or update, the formview makes invisible again. I want to show the formview with the newly inserted or updated row in Read-only mode. How do I do this?
protected
void gvEvent_SelectedIndexChanged(object
sender, EventArgs
e)
{
if (gvEvent.SelectedIndex
[Code]....
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Feb 7, 2011
After hitting the insert button the insert stored proc is run. if the record already exists then stored proc returns a specific value.I need to refill the details view textboxes with the values the user typed in.I am using the ItemInserted event handler.I seem to reference the control okay but the text doesn't change...even when I replace the command.parameter to just a literal text like "test".
TextBox tNPA = DetailsView1.FindControl("InsertName") as TextBox;
tNPA.Text = command.Parameters[0].Value.ToString();
So what am I missing. I also tried a detailsview1.databind() before and then tried after the above line and still no luck.
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Mar 15, 2010
In web config file I have add key values specified.
In the formview I have labels on edit , item and insert mode that I want to display all the time by getting those values from web config. I'm able to do that with no problem but when I change the modes between edit to insert or item view, I lose those label values until I hit the "select" twice from the Gridview, those values re-appear. Below is the snippet of the code. What do I need to do to retain the category values all the time?
[Code]....
[Code]....
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Apr 19, 2010
I get the following error on the e.Command.Parameters("@latestRowId").Value line. It was working, but now not and I'm not sure why? Conversion from type 'DBNull' to type 'Integer' is not valid.
[Code]....
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Feb 23, 2011
i have a web form to insert into sql server 2008 db with stored procedure.
my stoed procedure is
USE [dbCustomers]
GO
SET [code]....
the code-behind; [Code]....
i'm being able to insert into my db if i fill all the fields. But if i want to leave blank the date or marital status fields, it gives the following error;
String was not recognized as a valid DateTime. String was not recognized as a valid Boolean.
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Apr 12, 2010
I have a typical gridview/formview master control setup. When I try to update or insert I don't get any errors but it also doesn't work. When I try to insert data all I get are null values and when I update, none of the values are updated. The formview looks like its working, but just doesn't. The primary key is an identity and it auto-increments by one.
[Code]....
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Feb 17, 2011
I have a listbox inside a formview in a details page(master/details). The values for the listbox will come from a lookup table and when the user select one or more values it should be inserted in a table. The process sould be like the following:
The user will select one or multiple values and click on a Select button. Then a label should show the selected values. Then the user will click on the Insert button in the formview to insert it in the database.
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Mar 2, 2010
I'm having a really difficult time getting a DataList to work at all. When nothing is bound to the control (this happens before postback) I get an error.
<asp:DataList ID="ResultBox" runat="server">
<ItemTemplate><%#DataBinder.Eval(Container.DataItem, "Loc")%><br>
</ItemTemplate>
</asp:DataList>
I get the error: DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'Loc'.
I know it doesn't contain a property with the name 'Loc' because I haven't bound anything to the control, which I only do after hitting a Submit button and postback.
How do I get around this so it conditionally evaluates the DataList?
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Jun 30, 2010
I have created a Gridview (using ObjectDataSource) for Edit/Updates. I am getting an error on my DropDownList which is configured with the list items Yes and No only for both text and values.
Most of my data in my SQL table has values of either Yes or No, however there are some records that are BLANK or even NULL sometime.These rows fail in my GridView when attempting to Edit.
I tried going into the DDL Edit List items and adding a Blank with and empty value however each time i try to save the page VWD removes it.
How do i account for reverse lookups of all possible values Yes/No/Blank or Empty/NULL in my DDL?
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Jan 15, 2011
I am using a gridview to select a record and control that record using a details view. I am using a class based objectdatasource to link the data for select, update and delete. Sofar the select works but the update fails. Here is my error message:
ObjectDataSource 'odsDetailsView_1' could not find a non-generic method 'UpdateSet' that has parameters: setId, TYPE, iHPlayer, iAPlayer, iHRuns, iARuns, iH8Break, iA8Break, iHe8s8, iAe8s8, iH15BRn, iA15BRn, iHWins, iAWins, SET_ID, MATCH_FK, HOME_MEMBER_ID_FK, AWAY_MEMBER_ID_FK, HOME_TABLERUN, AWAY_TABLERUN, HOME_8BALLBREAK, AWAY_8BALLBREAK, HOME_E8S8, AWAY_E8S8, HOME_15BRN, AWAY_15BRN, HOME_TOTALWON, AWAY_TOTALWON, HOME_POINTS, AWAY_POINTS, LOCKED, GROUP_FK.
The first group of parameters have lower case letters and they come from my objectdatasources update method parameters. The second group of parameters are all capitalized and they are the fields in my SQL database table (and I don't know how they wound up in the error). This might be a clue.When executing the code my class method never gets the chance to execute because the error pops up before the code gets there.
Here is my objectdatasource:
[Code]....
Here is my detailsview:
[Code]....
Here is my class update method constructor:
[Code]....
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Jul 22, 2010
I figured I'd post here while I'm scouring the internet for a solution to my problem.
This code works:
[Code]....
My DataAccess method just uses the SQL statement and returns a dataset. If I comment out the repeater DataSource and DataBind lines, it will build successfully. And I know the dataTable has the information I want because I was able to step through and see it. If I leave in the DataSource and DataBind lines, I'm not even able to step through. I have no errors and no warnings, just build failed.
*EDIT* I apologize for the ugliness of this post, I don't know what happened. I changed the repeater to a DataGrid, and still got the Build Error without any errors. I went on anyway, came back, and now everything works fine. A little bug must've crawled in while I wasn't looking.
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Apr 13, 2010
The following utility works great on my machine but not on a partner's machine. The container and strChild values come through but the second line throws an error.
[Code]....
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Mar 22, 2010
I am using a DataList to display records from SQL backend in ASP.net 2.0 Framework 3.5. In the ItemDataBound I am setting up a Hyperlink's URL and enabling/disabling it based on data.
The HTML is as follows:-
[Code]....
and in the vb code:-
[Code]....
This is all working correctly in IE, but in Opera, FireFox and Safari while the Hyperlink works, the control is not disabled if Stk.Docs = 0.
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Jan 18, 2011
I have a formview tied to a gridview. The formview shows the data for the row selected in the gridview. The formview is invisible by default , default mode is readonly and becomes visible only on Selecting a row in the gridview. I make it visible in the SelectedIndexchanged event of the gridview. There are Insert and update buttons present outside the formview which perform the insert and update manually using code-behind.
After an insert or update on the formview, how do I retain the gridview selection?
View 5 Replies
Nov 22, 2010
I am having an aspnet panel in my aspx file.There is an ultraweb tab placed inside this.also I am having a button outside this panel.Within the tab I have a textbox whose readonly property is
set to "true".Whenever I click the button a javascript function is called .On clicking 'OK' in the popup ,the textbox values are lost.Is there a way to retain these values?
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Oct 30, 2010
I have a gridview in web user control and when i try to bind the datasource during the Page load process, an exception occurs. The datatable is retreived successfully without errors( I could view the data inside using the debugger ) but once gridview.databind() process takes place, exception occur. Could anyone tell me what happens ? This is really weird to me coz if such gridview is placed inside a content page instead of a webUser Control, no exception or error will occur.
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Jan 21, 2011
I use GridView & FormView to update a record. but when I click the "save" button, throw an except : FormView must be in the insert mode to insert a record. The record has been updated success, and I didn't change the mode of the FormView, how this error comes?
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Mar 21, 2011
In FormView (insert) I have a number of textboxes into which number will be inputted. I need all these textboxes to add up and display the total in a Label which I can then insert into the database with all the individual values. I expected this to be a simple thing... Then it appears that the best way to do this is to use javascript, which I have never used! SO this is my attempt which is a combination of things I found on the net, In the head (Clientapp is the name of my form)
<script type="text/javascript" language="javascript">
function Add1(Clientapp) {
var a, b, c;
a = document.Clientapp.BondRepaymentTextBox.Value;
b = document.Clientapp.PropertyRentalTextBox.Value;
c = eval(a) + eval(b);
document.Clientapp.ceTotalTextBox.Value = c;
}
</script>
Code behind on Page Load
PropertyRentalTextBox.Attributes["onchange"] = "javascript: Changed( this );";
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Sep 14, 2010
I am attempting to register my user controls within the webconfig file because I am receiving the Element does not exist error, but I am receiving the following error when I try to register them in webconfig:
Invalid or missing attributes found in the tagPrefix entry. For user control, you must also specify 'tagName' and 'src'. For custom control, you must also specify 'namespace', and optionally 'assembly'
The following is the code within the webconfig file:
<pages>
<controls>
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, [code]....
The pages that are having this issue are also referencing MasterPages if that matters at all:
<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="~/programs/MasterProgram.master" CodeBehind="~/programs/wim2011/default.aspx" Inherits="IPAM.Website.programs.wim2011._default" %>
and they are each within their own folders.
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Jan 15, 2010
I am using a 'SingleOrDefault' LINQ query with a Lambda expression such as:
Email email = db.Emails.SingleOrDefault(p => p.Email1 == Textbox1.Text);
If the textbox entry does not match anything stored in the table, how would I know and how could I deal with this situation in the code?
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Feb 5, 2010
I'm trying to prevent data from loading on the page when its needed.
Currently, I check the IsPostBack bool to prevent loading data in my user controls which allows the data to be loaded when the page is initially requested.
However, if my page fails validation and the page is sent back to the user with error messages, my user controls no longer have data in them because the initial request was a postback.
One solution is to have a flag in every user control (IsFailedPostBack) to force them to reload their data. Is there a better way?
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Aug 19, 2010
I have a listview which I would like to fill with self created user controls.But the problem is that the properties in the user control is not set. The usercontrols are displayed but the property values I enter is not set. Why is that?
Here is the aspx code.
[code]....
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Dec 31, 2010
fter upgrade to Visual Studio 2010 my web forms targeted to .NET Framework 3.5 that using master pages aren't correctly managed by designer.For example, master pages that contain a ValidationSummary produce an error in design mode in web form that is using that master page.To reproduce, create a new ASP.NET WebSite for the .NET Framework 3.5 and add a master page like this (headers omitted):
[Code]....
then create a new Web Form that use the previous master page and switch in design mode.
In my VS 2010 Pro I see this error when ValidationSummary is rendered: Error creating control ValidationSummary1 - Failed to create designer 'System.Web.UI.WebControls.ValidationSummary, System.Web, Version=4.0.0.0,...'
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