I have a gridview and the one coulmn is a image column. How would i change the DataImageUrlFormatString value in my code behind?
i tried doing this but it does not work.......
((ImageField)(GridView2.Rows[0].Cells[0].FindControl("ID"))).DataImageUrlFormatString
= "~/createthumb.ashx?gu=/pics/gmustang06_2.jpg";
[code].....
i have 2 tables assignment and feedback, in a gridview it displays all the assignments, the assignments then get feedback. im then wanting to change the view feedback button in the gridview depending on if there is new feedback for example:the feedback table has a state field in it so when its 1 i want that image button to change to the one with the +
View 1 Repliesim searching on how to change labels text color inside the code depending on my needs , for example my label's text is set to = "hello world" , can i change hello's world color to x and world's color to y?
View 4 RepliesI have an image scanned in 300 dpi. I want to change the DPI of the image to 72 through code. Seems there used to be a function called Image.SetDPI, but I cannot find it anymore. All I can find is Image.SetResolution(xDPI, yDPI), but that actually changes the SIZE of the image, meaning it cuts out a portion of it, without changing the DPI. Anyone know what function will accomplish this in Visual Studio 2008?
View 2 Repliesif i want to change the picture box image with code, where should i put the image files so it doesnt matter where the person installs the program?
for example:
onlinepic.Image=("IMAGE HERE")
like, isnt there a way to import pictures into your project or like the bin thing or whatever?
I am in the process of creating a relatively simple "yahtzee" game for a final class project. I have a "Roll the dice" button on my form that when clicked chooses 4 random numbers 1-6. Each number is a seperate "dice", each of the 4 pictureBoxes is meant to represent a seperate dice. A series of If then statements is being used for each picture box so that for example The random number is 1, a image of a dice facing the 1 side is displayed.[code]...
View 5 Repliesi do make custom button component with the below code..
Imports System.Drawing
Public Class AnsBtn
Inherits Windows.Forms.Button
[Code].....
After building the button class i import the dll to my project.
how i can switch between the images to set it as the current background image.
" Answerbtn1.BackgroundImage = ........"
I am making an invoicing application. I have a label (lblCost) inside of a UserControl (InvoiceEntry) inside of a FlowLayoutPanel (pnlEntries). InvoiceEntry represents a line item on the invoice, and pnlEntries is the "body" of the invoice. pnlEntries can hold several InvoiceEntry controls.
I am attempting to sum all of the lblCost values from each InvoiceEntry control to make a subtotal, and I want that subtotal to change automatically if costs are changed (e.g., a change in quantities being ordered). Is there a way to handle when the lblCost.Text property of any of the InvoiceEntry controls contained within pnlEntries changes?
InvoiceAdd.vb:
' Instantiate objects of the various database interaction classes.
Private mCustomer As New Customers
Private mItem As New Items
[code]....
I have a gridview and I add some buttons programmatically to this grid. I have an edit and delete button right next to eachother and I simply want to put a space between them programmatically. Any idea how to do that? Here is the code to add the buttons.
[Code]...
In datalist, I hve populated Grdiview.In Gridview , I hve checkboxes. Now i want to get the selected checkboxes names to be insrted into the database when clicking the button.so far i have tried like this
Protected Sub butn_Submit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles butn_Submit.Click
Insert_CATEGORY_Info()
[code]....
the result is
"foundObject reference not set to an instance of an object. "
I have a simple gridview that contains a label in one of the rows. I'm trying to access that label in the RowDataBound event, but for some reason I keep getting a "Object reference not set to an instance of an object." error on the line where I am using FindControl.
I've tried using "gvQReport.FindControl", "e.Row.FindControl", and "Me.FindControl" but nothing works.
[Code]....
I want to add DomainUpDown control inside a DataGridView as a separate column. Each time a new row is added,I want that DomainUpDown control also be added. I also want to know when the user click the DomainUp or DomainDown button in DomainUpDown control for each row. Is it possible or not? I am using language vb.net/C#.
View 1 RepliesI've got a button inside a gridview to remove that item from the gridview (its datasource is a list). I've got the list being saved to session anytime a change is being made to it, and on page_load check if that session variable is empty, if not, then set that list to bind to the gridview.
Code Behind:
Public accomplishmentTypeDao As New AccomplishmentTypeDao()
Public accomplishmentDao As New AccomplishmentDao()
Public userDao As New UserDao()
[Code].....
I have a gridview that appears in a modal popup that is generated dynamically and is bound to a dynamically generated SqlDataSource. I did this to hopefully take advantage of the gridview's automatic editing capabilities. My problem is that when the edit button is clicked the modalpopup closes due to a full postback in spite of the fact that my gridview is in an update panel. I looked at solutions here and here but neither fixed the problem. I've also tried every combination under the sun regarding the positioning of the ModalPopupExtender in relation to the update panel etc, and have tried changing UpdateMode to conditional as well.
Markup:
<span class="none"><asp:Button ID="btnDummy" runat="server" Text="Dummy" /></span>
<ajax:ModalPopupExtender ID="mpLabel" runat="server" TargetControlID="btnDummy" BackgroundCssClass="modalBackground" PopupControlID="pnlLabels"></ajax:ModalPopupExtender>
<asp:Panel ID="pnlLabels" DefaultButton="btnOk" Style="display:none;" runat="server">
<div style="background-color:#fff;border:1px solid black;padding:7px;">
[Code] .....
I am using a gridview in my form.aspx page. The textboxes in each row of the gridview are to be populated from a datagrid upon clicking a particular field of the datagrid
View 1 RepliesHere is the asp code for the design, I have a gridview that lists all Leave dates selected w/ 2 radio buttons . The user may choose if it is for whole day or halfday which are represented by a radio button. I want to get the value of each row if the user wants half day or whole day for me to calculate the leave days.
-I can already get the value but on the first 5 rows only since my gridview is paged with paging size of 5. how can i get the value for the other items if I have more than 5?
<asp:GridView ID="gvDates" runat="server" AllowPaging="True"
AutoGenerateColumns="false" OnPageIndexChanging="gvDates_PageIndexChanging"
onrowdatabound="gvDates_RowDataBound" OnRowDeleting="gvDates_RowDeleting"
PageSize="5">
[Code].....
Screen and send are both bmps:This is what I've tried so far but it doesn't work
For y = 0 To screen.Height - 1
For x = 0 To screen.Width - 1
If getpixel(screen, x, y) = getpixel(send, 0, 0) Then
[code].....
How can I access rep_DataSimilarToBacthid ? I need to bind the GridView and call GridView RowDataBound or InitializeRow
[Code]...
I am using VB.Net with Framework Version 2.0.
I've got a fileupload control inside of a gridview so that each row (item from the database) can have an attachment associated with it. I've got a button next to the fileupload control (besides the default browse... button to select the file) to actually take the file and upload it to a file server.This works great if I use this button "Upload". However, underneath my gridview I have another imagebutton that is outside of the gridview, its just sitting on the form / page.The idea of this "Update" button is when end users make changes to the grid I can simply loop through the grid and update the values they have entered to the database. This also works great.
Now here is my issue assume a user has 3 rows in the grid view. On 2 of these rows he decides to add an attachment but he never clicks the "Upload" button he only uses the standard browse button to select the file. Now instead of clicking the "Upload" button that is on the grid view he ends up clicking the "Update" button outside of the grid thinking that it will save his attachments.
So I decided to write code to grab the fileupload control from the grid using .FindControls("NameOfFileUploadControl") in my Update button loop where I loop through all the rows. Then I check if myFileUploadControl.HasFile property to see if there exists a file and if there does upload the file then continue with the code.
The issue is when I click this "Update" button .HasFile always returns false even though I can see the text string of the path in the fileuploadcontrol textbox (the standard one next to the browse button). Is it because this goes back to the page load event and checks if it is a post back? What causes this and how can I fix it?
edit:Im adding some code because im still confused with this
Protected Sub SaveGrid()
For Each Row As GridViewRow In Me.gvLineItems.Rows
Dim f As FileUpload = CType(Row.FindControl("fuAttachment"), FileUpload)
[code]....
This method gets called on a click of a button... The fileupload control is in an of a gridview that is wrapped inside of an UpdatePanel:
<asp:FileUpload Width="90px" Font-Size="xx-small" ID="fuAttachment" runat="server" />
So why is this property always returning false?
I have a GridView which is continually rebound using a timer and is within an updatePanel so the page doesn't refresh continually (each row has a countdown sequence so the gridview needs to continually get updated). Inside the gridview i have an imagebutton with an OnClick method. Previously to get the OnClick method to fire I would make sure the gridView wasn't in an UpdatePanel and that the pageload databinding of the gridview was in an "If Not IsPostBack". With the Timer though I can't have the gridview binding an an "If Not IsPostBack" and it needs to be in an UpdatePanel. Is there a way to use an UpdatePanel and "If Not IsPostBack" and still get the OnClick method to be called?
Here's some of the code, if my explanation didn't make complete sense:
UpdatePanel/Timer/GridView
<asp:UpdatePanel runat="server">
<ContentTemplate>
<asp:Timer ID="timerCountDown" runat="server" Interval="1000" OnTick="timerCountDown_Tick"></asp:Timer>
[Code] ....
I have an asp.net gridview that is originally bound to a sqldatasource control, but when the user presses an external button, it instead gets the contents of a datatable rather than a SQLdatasource control. I therefore had to write code in the PageIndexChanging event of the gridview to allow for paging. My code is as follows:
Protected Sub gvEvents_PageIndexChanging(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewPageEventArgs) Handles gvEvents.PageIndexChanging
gvEvents.PageIndex = e.NewPageIndex
gvEvents.DataBind()
This worked beautifully until I added an AJAX update panel so the whole page wouldn't postback every time it paged, and paging stopped working. I debugged it and discovered that it is actually calling the PageIndexChanging event, but nothing is happening. I searched the web and found a few people with the same problem, but their solutions did not work for me. There was one on this site whose problem was solved by the following:
In PageIndexchanging event, where you bind data to grid, make sure, data is again fetched from the DB
I don't know what that means; my data was being bound as demonstrated above. I have "enable paging" set to true and EnableSortingAndPagingCallbacks set to false.
I am including my markup for the updatepanel below.
<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ibtnSearch" />
</Triggers>
[CODE]...
I would like to add a property to the BoundField control that will change rendering as show below.
<td>My Bound Text></td>
Should become
<td><span>My Bound Text</span></td>
This is all I have so far...
Public Class BoundField
Inherits System.Web.UI.WebControls.BoundField
Dim _ellipse As Boolean[code]....
I have the same problem as this poster, however I am using a .net gridview and would like render my html to use the fix offered here.Using CSS to create table cells of a specific width with no word wrapping. EDIT I think I may be going about this all wrong, maybe you don't change the rendering by extending the BoundField, but rather add the properties to the boundfield then change the way the gridview renders its fields based on the properties of those fields.Which also leads me down the path of control adapters,
I have a problem with My dataGridVew. i am trying to export data from my DB to excel fie. it's a small page where there are only data grid view and button to export like this :
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
[CODE]...
When i click on the button error message is coming : "Control 'GridView1' of type 'GridView' must be placed inside a form tag with runat=server.???" even i have placed it in form ?
How to apply textbox blank validation on button click inside gridview in javascript?I have a gridview that contains 2 textboxes and a save button in each row.I want to validate the textboxes on corresponding save button click.
[Code]...
I am "weeks new" to visual basic 2008 but I was hoping that someone might tell me how I can open an image in whatever type of "visible" graphics window (always positioned at: x=0 y=0); move to some "definable position" of interest x=(n) y=(n); change the brightness of that "individual pixel" by some "definable means of measure" from its original state; and save the new image as a separate image file?
View 4 RepliesHow do you change the cursor image to an image from the project resources?
The methods I have found either don't work or only change the image within the form, and reverts back to default when the mouse leaves the window.
I have a gridview and in that gridview I created a list of imagebuttons programmatically with an addhandler as follows:
Dim deletecshr As New ImageButton
deletecshr.ImageUrl = "imagesttnDeletemini.gif"
deletecshr.ToolTip = "This Will Delete All Cashiers"
AddHandler deletecshr.Click, AddressOf deletecshr_Click
[Code] .....
My issue is getting the value of the row of the clicked imagebutton in the click handler. How do I get that?
I want to do is have a picture box that when you click on the picture box it changes the picture inside the picture box.I have tried but failed at doing something like this..[code]But I can't get the name of the Picture that is in the PictureBox.
View 5 Repliesmeans the images that will display in the picturebox is based on the value shown on the textbox (ProjID)..
Please see code below..
[CODE
Public Class Form4
[code].....
When I import a database into the gridview, and if the case is that its too big, so i get this horizontal scrollbar, how can i change the size of the GridView so that it fits nicely, and there's no need for a horizontal scrollbar.
View 6 Replies