I have a Dropdownlist in my form as an example as below.
The Dropdownlist items are pulled out from the database table.
When a user Clicks 'Save Template', A new row is created in the database, BUT the dropdownlist items
remains the same :( I want the list to be dynamic so that the user doesn't have to press F5 for updating the list.
In my project Online Travel Agency, I want that if my employee add a new package in database then newly added package will be shown on package.aspx page dynamically with new tag, so how can i do it.
View 1 RepliesI have a DataGrid with a TemplateColumn containing an asp:DropDownList and a BoundColumn. I'd like to have a VB.NET handler for when the selected item in the DropDownList changes. I'd like this handler to also update the value in the BoundColumn with the value of the newly selected item in the DropDownList.
Can someone point me to some resources I can examine to learn how to do this?
If the handler for the selection changing can give me the value of the NEWLY selected item, it should just be a matter of accessing the cell for my BoundColumn in the same row and writing to it. I do not know the syntax to achieve this.
I was used TextBox in the GridView Then I Replace this textBox with Dropdownlist
and i fetched all the data from the database using DataSource in Editing Mode
But The problem is when i choose item from the dropdownlist to update it,it returns to Empty
(with No values) in the DropDownList??whats the problem?
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i have a DropDownlist in my GridView that is bind to another DataSource than the GridView.
For the display it is working well but when I want to update datas I m stuck. Something is wrong and I don't know why.
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I am stocking in the Database the value of the dsDroit but when I want to update the field I just know how to get the text not the value.
I have a gridview that holds 4 columns. in the fourth column there is a DropDownlist that holds three items.
I want my users to select one of the values and when they do the auto post back (which is set to true) should execute a method that updates the database selected row. But do i use the selectedindexchanged of the DDL or the Gridview? My head is totally thrashed so i imagine its really simple and im just over thinking it.
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Dropdownlist is not updating the table
One of the fields on my formview is a dropdownlist. When I go into edit mode the dropdownlist gets set to the correct value and works fine up to this point. Problem is I just can't see how to get the newly selected value of the dropdownlist to persist to the database when update is clicked. The DDL is a category list and I want to allow changing of the category for each record. Like I said I have it working so it displays the correct category for the record but if I change the DDL (change category) the new selected value doesn't get updated in the database. It just keeps using the binded value that was originally assigned to the selected value of the DDL. see code snippit
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The above snippet is how I am binding the DDL. Now to not bore you with a ton of code paste I use various events of the formview to make sure the value displayed in the DDL is correct for the record that I am viewing at the time. All that works just fine. Where I need some pointers is the when I enter edit mode and change the DDL from say fire to ice it isn't getting persited to the database, all other info in the record gets updated just fine but the DDL never changes. I have tried several angles to getting this working and TBH my brain is yelling BREAK TIME.
I am trying to create a Gridview in which I can update the Project Officer name in the Gridview from a DropDownList.
The Project Officer DDL comes from a seperate query (SqlProjectOfficerName) as the other information (SqlDataSource1)... as you can see below.
When I select EDIT, the DDL appears and I can select from the list of Project Officers, but when I select UPDATE, the name of the Project Officer doesnot change.
review the code below and assist as appropriate to write the Project Officer's name back to the table.
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I have Gridview like that:
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I bind data to GV in this way:
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No problem with that. Now, I´d like to update the database with the dropdownlist in gridview, I wrote a method in this way:
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The problem is when I click on the edit button there is nothing in the dropdownlist, it´s empty
I can't get my gridview to update? Inserting and deleting work fine. Here is my code:
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DropDownList not updating inside gridview
I have a situation where i need to update my Dropdownlist templatefield inside a GridView....but only for a specific cell. I have seen codes like this to loop through the whole GridView and update every rows in a specific column, but how do i do it if i only want to update one specific cell ? (If i know the index information of the cell, for example, I know i want to update the dropdownlist on Column 3 and Row 2)
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
this.WorkTypeDDL = ((DropDownList)row.FindControl("WorkTypeList"));
this.WorkTypeDDL.DataSource = AL;
this.WorkTypeDDL.DataBind();
//more codes blah blah blah//
}
}
i'm using ASP.NET 3.5 with c#. my problem is that i have created a user control and want to dynamically add mulitple instances of these controls to the web form.when a user adds data to one of the user controls i then need to carry out some calcaulations, change the current user control data and then alter all the other user controls to different values(ignoring the one just changed). i then need to alter some of the controls on the main page outside of any user control.i've no real idea how to do this. i've thought about exposing an event in the user control to pass values up to the page. the page then carries out the processing to non 'user-control' controls then drills down to each user control in turn(all user controls are in a placeholder control). but that would be a pain retrieving all the HTML element id's etc....hope that wasn't abit rambling lol.
View 2 RepliesI'm creating textboxes in the Page_Load event and giving them values, however whenever I load the details I am getting the same output. I always seem to get the first output I got, even on subsequent searches.Here's what my code with the irrelevant information missing:
Textbox txtName = New Textbox();
protected void Page_Load(object sender, EventArgs e)
{
[code]...
If DropDownList has two values (e.g. "Item 1" and "Item 2") and has autopostback enabled, first time it will generate and show "Item 1" in the textbox (the default value for the DropDownList), but if this is changed and the autopostback fires, the textbox does not change.I've tried getting around this by creating a new TextBox, overriding the "LoadPostData" function to prevent this from loading, which got around the issue there, but then I couldn't view the data afterwards.
Any idea how I could get around this? I may be approaching this in the wrong way.Edit: I've added another item to DropDownList that removes TextBox, so that it can be re-created again. It seems to show the correct data when it is re-created after being removed, but if I'm attempting to just edit it, this isn't updating correctly.Edit2: Here's the rest of the code for this page in case this helps at all. The objects which I'm having issues with are SBUName and SBUComments, which are both TextBoxes. The same issue is also happening for SBUClientDropdown but I believe the resolution will be similar:
DBHandler DBHandler = new DBHandler();
List<string> clients = new List<string>();
List<string> clientGroups = new List<string>();
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I'm adding items dynamically when a row is selected from GridView.
1. How can i make the items added are selected by default - (solved)
2. How can i avoid duplicates getting added to list
3. How can i remove them from list when user un-checks them.
And I want to change checkbox with an image and I'm using css like following but it is not working
.cbxCustom
{
...
}[code]....
I have two tables - one called Contract, one called Sow. Contract has a foreign key that points to SOW. What I'd like to do is to be able to edit the Contract details and provide a drop down list of different SOW records to choose from. The current code:
In my Contract Controller:
public ActionResult Edit(int id)
{
Contract contract = contractRepository.GetContract(id); [code]...
The list populates with values, but when I change them and update, the foreign key does not change.
e have a excel file which is updates dynamically, we need to design a web app which will be reading this excel file and should update the datas in the web app dynamically.
View 1 RepliesI want to display the text entered in a textbox on a label character by character. I.e, if I enter a character in textbox, I need to display that character in the label. Up to the length of the textbox, this procedure has to done for the label also.
View 3 Repliesusing System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
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the row used to get in edit mode only if i edit the next row means first row never get in edited mode.
I have a grid view and have five dropdownlist on it. I have edit update and cancel edit buttons on each row.
Drop down list is updating the database, but only first value in the dropdownlist even when user select second, third or any other value from the dropdownlist.
What could possible be the reason for this. Here is my row Edit/ CancelEdit and Updating Events.
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Hosting page:
protected void Page_Load(object sender, EventArgs e)
{
LoadMyControl(Parameters); //Do it every page load to preserve it's state
}
protected void LoadMyControl(string parameters)
{
plchld.Controls.Clear();
Control userControl = LoadControl("TheUserControl.ascx");
userControl.ID = "userControl1";
plchld.Controls.Add(userControl);
}
Now inside this control, when a button is clicked I want to update ,let's say a Label on the hosting page.
What is the best way to do it? Custom event?
I would like to add a Title such as "--Select your city" to my DropDownList. So it would look something like:
--Select your city
All
Dallas
San Francisco
etc...
Here is my code:
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So before I fee the Control with the cities from the database, I need to add the title first.
how to change gridview cell value for a checked row without affecting any changes in database for ex if a row contains quantity of item 6 i want to change it value to 5,4 upto 0 that is on click event of delete quantity button i have identified row with a checkbox in grid view.
View 1 RepliesI have two drop down lists on my page. One (DropDownList A) has the values preset by me. The other (DropDownList B) has its values filled by a database query if a button is pressed. Each of them have AutoPostBack set to true. Each of them have corresponding onselectedindexchanged functions. DropDownList A works fine. When I change it, I want it to turn itself invisible. It does. DropwDownList B is not working. When I select something, it does the postback but the selected item is reset and the onselectedindexchanged function is never called. I feel like this is a problem I've solved in the past, but it's been 3 years since I programmed ASP.NET. All this is done in C# by the way.
View 12 Replies