Asp.net - Loop Through Gridview And Get Data Key Value?

Nov 25, 2011

I am trying to loop through the rows of my gridview and retrieve the data key value of each row and then execute some code to run sql queries. How can I get the data key value of each row in variable? right now I am receiving an error message saying:

value of type system.web.ui.webcontrols.datakey cannot be converted to integer.

Here is my code:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
For Each row As GridViewRow In GridView1.Rows
Dim therowindex As Integer = row.RowIndex

[code]....

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Loop Through An Xml And Add To A Gridview?

Jan 16, 2012

I'm trying to loop through an xml and out put the nodes into a gridview.this is the code I'm using:[code]....I only get the last node added, how can I output all the matching nodes.

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Gridview For Loop Returning The First Row

Feb 20, 2009

For Each gvRow As GridViewRow In gvClients.Rows
cmdExcel.CommandText = "INSERT INTO [Sheet2$] (tvlr_Lastname, tvlr_Firstname,tvlr_title)" & " values (@Surname,@FName,@Title)"
cmdExcel.Parameters.AddWithValue("@Surname", gvRow.Cells(0).Text)

[Code].....

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Oct 18, 2011

I know how to loop through a GridView and extract each row using the for each loop as below, but I was looking for a easy way to loop through the datagrid and say extract the last 20 rows? Is it possible to go through in reverse order in vb.net?

For Each row As GridViewRow In InventHistoryGridView.Rows

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May 11, 2011

Create A Loop To Retrieve A Column Of Data From Gridview

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Mar 10, 2010

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Jan 11, 2011

Following code below. I will explane what it does and it needs to do.

Its a query that fills a gridview. Everything thats in the gridview needs to be exported to a excelsheet.

I've got it working that when i fill it, it will fil the sheet with only the same line. Im not a prof VS developer.

Code:

Now the problem is the following.

Code:

It need to pick up each line but it only picks up the first line and duplicate's it.

I left the qeury line out for privacy reasons.

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Evaluates Loop Condition In Do...Loop Statment To Determine Whether Loop Instructions Should Be Processed

Mar 14, 2011

Makes the following statement about the code below:

**"The computer evaluates the loop condition in the Do...Loop statment to determine whether the loop instructions should be processed. In this case, the inputsales <> String.Empty condition compares the contenst of the input sales variable to the String.Empty value. As you know the String.Empty value represents a zero length, or empty, string if the inputsales variable is empty, the loop condition evaluates to True and the computer process the loop instructions. *If on the other hand the inputsales variable is not empty, the loop condition evaluates to false and the computer skips over the loop instructions.

Based on the code I think it is the opposite: ...that while the inputsales value is not empty it should evaluate to true and process the loop and if it is empty it should evaluate to false and skip the loop?

See below.

Option Explicit On
Option Strict On

Imports System.Globalization

[CODE]...

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Dec 6, 2010

How to show pop up menu from database in gridview on each gridview row items ?Example of this is : http:[url].....Move your cursor to Departure time and arrival time...a want this type of popup in gridview items....which fetch entries from database..

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Sep 24, 2009

In my application,i have a gridview in which columns are created at runtime.Actually these columns are created when i am entering data in a database table.[code]where Column1,Column2,column3 may vary during runtime.i need to enter values to these columns during runtime.But i cant bind these columns because these are created during runtime.The first column "Description" will not change.It will remain constant.For each description, there will be values for each column.At last these data will be saved to the database.How to add columns in the gridview during runtime?

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Asp.net - Export Gridview To Excel Without The Gridview Formatting VB

Sep 23, 2011

I am able to export a gridview to excel, my problem is that I cannot figure out how to remove the formatting from coming over from the girdview. Here is the code I am using to export the gridview: Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click

[Code]....

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May 25, 2009

I have a modal popup that contains a gridview. On the click of a button inside of a grid i reload the gridview with the data that depends on the id of the row clicked in the gridview. I would have like to reload the gridview onclientclick but I couldn't find a way to do that. Is it possible to reload a gridview client-side without the user even knowing the page partially loaded?

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Mar 9, 2011

I know I am missing the obvious. I would like a label to show how many cycles in loop are left.

[Code]...

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Nov 23, 2011

I am constructing a program, i am new to Visual Basic, but i have past programming experience. I was wondering if anyone knew how to form a loop that could...lets say calculate the answer when two numbers are added together,and it would repeat this thousands of times, etc. And if there is a way, would it be possible to calculate the time taken to complete this loop.

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May 3, 2010

I have written a function that gets the alexa ranking of a given url, now this function works perfectly but I want to loop through a ListView of urls and grab the alexa rank of each item (url) with my function.The code works great if I put a MessageBox in the loop to test that the function is returning a value but when I remove the MessageBox the loop does not work.I need it to loop through adding each result without a MessageBox stop in each loop.

vb
For Each Item In ListView1.Items
Dim result As Integer
result = GetAlexaRank(Item.Text)

[code].....

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May 31, 2010

So I made a simple patform game where the player has to jump quickly while the platforms move to the bottom of the screen, as to not touch the bottom of the screen. But, I need to know how to create a loop to loop the locations of the platform. This means that after twenty or so platforms, the same platforms come up again, so that the player will have an "endless" game. I've declared all the platform's locations relative to the location of the first repeating platform:

[Code]...

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Aug 11, 2009

I assigned an integer as 1, and looped my program using:[code]I can recieve the packets without looping, but once i loop, i receive nothing.

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Aug 15, 2010

I am using VB.net.

I need to fill a gridview(1) with data that cames from another gridview(2), ie:

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(1) - Selected articles from (2)

What is the best way to do that?

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May 29, 2012

I have this little application that runs a SQL query works great, now I want to have a Start Button run the and display results then System.Threading.Thread.Sleep(300 * 1000) for 5 min then run again and display results and loop till I buttonstop_click. unsure if the sleep is the best method.

[Code]...

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Sep 10, 2009

I am new to VB programming. I have the following code. When I execute my program only the last value from the loop is displayed in the label. I do write my code so that all of the values (years 1 to 5) show up in the label?

[Code]...

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May 9, 2011

I'm completely new to working with more than one thread at a time but I've been reading up on backgroundworker quite a bit today. I get the general idea and think I could use it ok if it weren't for the fact I have a loop in a loop and I don't think they could be run inside a single thread together

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Sep 29, 2011

How would I convert this Do While loop to a For...Next loop? I can't figure it out.

intCount = 0
Do While intCount < 50
lstOutput.Items.Add(intCount)
intCount += 1
Loop

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Jul 21, 2010

Dim count As Integer
For count = 1 To 10 Step 1
Dim But+count As New Button
myButton+count.Width = 100*count

[code]....

Dim But+count As New Button => How to make it work

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May 25, 2010

I'm slowly learning about loops. I have a couple of questions

1) When a condition is being tested.. what does that mean? I don't understand the "condition" word.

2) What is the difference between a loop that never ends and a loop that ends?

I have the code for the loop that ends and the loop that never ends. I can see the difference in the code, but I don't understand what is making it different. Here is the code below.

[code]...

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Apr 7, 2009

EDIT: forgot to mention, so better state this before anything else... I'm running VS 2005 with Framework 2.0.I have a GridView (gdvN) with 7 columns (N1, N2, N3, N4, Edit command e um Delete command). In the same aspx, 4 textbox (that would be a new line with new N1, N2, N3 and N4 values.).

After filling the textboxes and pressing a button, it was supposed to insert a Row in the gdvN.

[Code]...

Unfortunately that didn't solved, as it edits an existing row instead of adding one. As I can see, that may be two paths for this to be solved:Is there a way to make _newitem be created with the same structure as the gdvN rows. I didn't found how.Or there's another logic (or a mistake in the coding) I'm not looking?

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Jun 2, 2011

Add gridview in sql? This is my [code]...

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Apr 27, 2011

have Create the following Code For GridVie____

dim dr =new GridViewRow(0, 0, DataControlRowType.DataRow, DataControlRowState.Normal)
dim dc1 as new TableCell
dc1.text="Hello"

[code].....

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Jul 19, 2010

I'm using a gridview to display and access a sql database and using databinding. I'm also using autogenerate columns as one gridview has multiple sources and toggles between them. What would be the best way to allow the user to insert a new row?

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Jun 20, 2011

I have a Category table that have the following columns CatgeoryID, CategoryName, and CategoryPicture and i have Product table linked by Foreign Key to Category table.[ocd]e....

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Sep 23, 2010

do anyone know how to add a new column in gridview using vb.net syntax?the column that i want to add is not bind to any database unlike the other column in the same gridview.

i try to use GridView1.Columns.Add("Percentage")but it turn out to be error.the error said " Value of type 'String' cannot be converted to 'System.Web.UI.WebControls.DataControlField'"

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Add Several Textboxes To One Row In Gridview .net?

Jul 28, 2011

My problem is that I have a gridview with five rows and an unknow number of columns. What I want to do is in row 1 I want each column to be a textbox and in the next row create a button/link to create a report for each column.  My problem is only the last column is being changed to a textbox.  Here is my code.

[Code]...

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Aug 7, 2011

how can i add text box value in gridview

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Sep 14, 2009

I have a Gridview that has a timestamp as one of the rows. When I read the data from the database the data is in the format( mm/dd/yyyy hh:mm:ss ). I've figured out how to format the way I want it which is just the ( mm/dd/yyyy ) and droping of the (hh:mm:ss) with the following code:

[Code]...

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Jul 7, 2009

I want to add a row to that will contain dropdowns,search textboxes, and maybe other controls to allow filtering to the gridview. I've looked at This Question but it did not help me. How can I add a row so i can add these controls to my gridview?

[code]...

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Jan 26, 2011

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1 Pencil 1
2 Pen 1
3 Rubber 2

I want to calculate the total price of price fields in Gridview Footer ...ie..

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How to do it using VB.NET ?

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Asp.net - Get Dataset From A GridView?

Apr 19, 2011

how can i get the dataset from a gridview i have populated?

i tried this:

Dim importedDS As DataSet = gwResults.DataSource

but it's coming out blank all the time. is there another way?

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Aug 11, 2009

I have a gridview in which I have set datasource as a datatable. Whatever update I make to the gridview, it should reflect only in the datatable and not to the database. When I click update, I have to get the row number of a particular row which I want to update. How can I get the row number in rowupdating event of gridview in order to update the datatable? Suppose I have a datakey and if I get that unique id, how can I update the datatable which is the datasource?

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May 2, 2012

The gridview on my page is set up with templat fields in each column so that I can enter information and save it to my database. There is no data that ties directly into the gridview just the ability to add multiple rows at a time to save the data. I had it displayed with empty textboxes and it was working fine and all of a it stopped and now won't show up. Any clues as to what is happening. Code follows...

[Code]...

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Apr 14, 2011

I am creating a new page in VS2005 (VB) and it has a gridview, my problem is when I try to insert the grid into the ContentPlaceHolder (in design mode) it ends up somewhere else on the page all together.

ASPX code

<%@ Page Language="vb" MasterPageFile="~/secure/Master1.Master" CodeBehind="Master1.Master.vb" Inherits="Main.LiveCalendar" %>
<asp:Content ID="ContentPlaceHolder" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
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[code]....

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Nov 23, 2010

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Jan 5, 2012

I have gridview binded from database..

I have following code:

protected void Page_Load(object sender, EventArgs e)
{
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}

Now, I have checkBox and drop-down inside the gridView, When user selects some rows from checkboxes and clicks on Update Button, Page_Load event fires and calls BindGrid(); method and selected rows should get hidden. How can I retain checkbox values after the page load event.

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Oct 22, 2010

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Oct 13, 2011

I am using checkbox in the gridview, if i clicked the checkbox and press button then selected row copy to new cell (row)Below code is working for delete, not working for copy the rows

Code
Private Sub btncopy_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btncopy.Click

[code].....

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Jul 13, 2011

I have an app that will load info from a csv into a gridview. Everything works properly except for one column. It is only displaying fields with numeric values. All of the alpha-numeric cells are being left blank. I have looked at the csv and it is properly formatted and the other columns have alpha-numeric as well and are being pulled in properly.

Dim savePath As String = "\Depts"
Dim Conn As System.Data.Odbc.OdbcConnection
Dim dt As New System.Data.DataTable

[code]....

The Item column is the one that is coming in incorrectly.

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