Forms Data Controls :: Gridview's Cell Have Changed?
Sep 23, 2010does anyone know if the gridview can tell you if a cell's contents have changed (during an edit) in order to determine if an update should be made against the database?
View 5 Repliesdoes anyone know if the gridview can tell you if a cell's contents have changed (during an edit) in order to determine if an update should be made against the database?
View 5 RepliesI have a gridview that is being databound by an SQLdatasource and on RowDataBound i am doing a calculation and then setting
e.Row.cells(17).text = Result
However, when I go to sort it on the website it sorts it based off the previous values.Cell(17) from the datasource reads in all 1's. The numbers I change it to range from 0 to 15. So when I click sort nothing changes because it sees it as all 1's.How can i make the gridivew sort off the changed text values?
How do i change the name column text the current row when the selected index of drop down is changed? ex:first row is mudassar khan and belgium, when i change belgium i want mudassar to be replaced to a name which i fetch from database....
View 1 RepliesI have a grid view populated with some data included bit fields and I made an export to excel function For each row i need to check the cell with the bit value to change the cell color, but the cell is always empty, even if is the field is set to False or True. foreach (GridViewRow row in gv.Rows)
View 2 RepliesI'm having a weird problem where the GridView cell that I'm programmatically updating turns grey, and throws a null error when attempting to save row. I have been searching all day and have not been able to find a solution. I'm guessing there is a problem with my code, so here it is:
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
i we click a table cell than color is blue and we again click a different cell the first color is remove and second is bule
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I have a dropdownlist as a template item in a gridview - it populates fine and with the right values. I have an SelectedIndexChanged on the dropdownlist, and has set it for postback. In the SelectedIndexChanged event, I would like to know where the control that fired this event is, - which row in the gridview is it in? How do I get this info? If the row was selected it would be easy, but the only thing that has happened in that row is that the dropdown has changed value and consequently the SelectedIndexChanged event has been fired - is that enough to know which row the event has been fired from?
View 1 RepliesI have a Gridview with about 6 templated columns hooked up to SQL, with a Save button below the grid.
When save is clicked, I loop through each row, and write each row back out to SQL.
Can you recommend a good way for me to tell whether the row has changed so I can avoid re-writing the row when nothing has changed?
This is not only for performance, but I also have a request to write out a "Last Modified Date" along with each record. So for that, I would need to know whether the row has changed.
I saw someone mentioned that the Gridview.RowState could be used for this, but I don't see how.
One alternative I see is to re-read each row from the database first, to see if anything changed. Another alternative might be to set a dirty-bit on each Textchanged, SelectedItemChanged, etc, for the row, but I'm not sure where to store that.
I have Gridview which allows user to edit record.I already build the event to save the new record, time and user machine information to a log database.However, this means a whole record is saved to the log... if the user just change one or two column/field out of say 20 fields, then there is a lot of waste. Also the change is not obvious.How can I log exactly which field(s) was changed in the record ?
View 1 RepliesI've got a GridView in which all rows are set to Edit by default.
I want to be able to save the rows only where changes have been made. At present, my code will only update the first row from my GridView to my database. I've had a look on the internet, and think that the Getchanges might be able to help me, but I'm struggling to work our how exactly to implement it in my scenario.
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Need to have the ability to change the view of my gridview based on button click, the easiest i can describe what im trying to do and need is if you have every been on any e-comm site where you get a list of items presented to you.. normally you may get a thumbnail, description and price.. but at the top of that list you get the option to view it as a list with no thumbnails and so on..
Is gridview the best control to be using if i want to do that? example of what im needing is similar to walmart.com
if you search for a product doesnt matter, when the results are presented to you, you have it in what they call "List View", but you have the option to view it in "Grid View", not sure if they are actually using listview and gridview controls.. but i want the same end results..
What would i use or what can i search on to accomplish the same thing.
I have a gridview with paging. I have a style set for a selected row (highlights the row in light orange). What i would like to do is that each time a user chamges the page, the selectedIndex & selectedRow automatically becomes the 1st row of the selected page. So i would like to see the orange highlight on the 1st row of the page to indicate that the row has been selected.
I have tried GridView1.SelectedIndex=0 but this only seems to select the index of the 1st record in the whole datagrid. Does anyone know of how to set the 1st row of the page to the selected row each time the pageindex is changed?
i need to do a pop up for every cell in gridview. The moment user click on the cell on gridview , a pop up pop up and showing every the data in the cell for user to do modification in textbox.
I am facing the problem in capturing the cell data and also bind the pop up to every cell.
I have a gridview that has 5 columns, and when a particular row is selected, I need to get the value out of the 5th column.
View 17 Repliesin my application a gridvie containing datas. if i select a row i want to display 2 cell values in to
2 textboxes.
how it is possible. i need the code in vb.net
I have a gridView which connect with sqlDatasource. I want get value from cell. When i do that - this.GridMain.Rows[1].Cells[9].Text but always there are "". How can a i get value form cells.
View 4 Repliesi'm having some problems calling a field from my gridview to use in a SQL query.
aspx:
<%@ Page Title="" Language="C#" MasterPageFile="~/MenuMasterPage.master" AutoEventWireup="true" CodeFile="Relatorios.aspx.cs" Inherits="qmetrics_Default" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
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I think this happens cuz he is grabbing the two fields...how can i get only the field "nome"?
<asp:GridView ID="gvcart" runat="server" AutoGenerateColumns="False"
BackColor="White" BorderColor="#DEDFDE" BorderWidth="1px"
CellPadding="4" Width="593px" BorderStyle="Solid" ForeColor="Black"> [code]....
orderid='" & gvcart.Rows(i).Cell(1).Text & "'" is not returning the value....orderid is a label in gridview.. how to get the value of the cell...
How to set Height and ItemSource(Business Object as DataSource for Cell) for every Cell in DataGrid/ Grid? Shown below is part of code I am currently using with Grid Control. What I am currently doing is that I am using ListBoxItem, set Item Height and ItemSource at ListBoxItem Level, Add ListBoxitem to ListBox and then Add ListBox to Grid, It leaves me with just one row and multiple columns in the Grid, which is perhaps not the best way of doing it as it doesn't allow me to take benefits from UI Virtualization of Grid.
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I am open to use any control i.e. Grid/ DataGrid provided it allows me to set Cell Height and item source at Cell level. In my requirement, Cell height depends on the Item duration and size of image, which means the height of the cells may not be same across cells in any particular row.
I have a gridview that loads with a new datasource on button click event. On the gridview (which is located in a table columm incidentally) are 2 columns, a descriptor and a checkbox. The problem is that after postback, the column widths change, the checkbox column expands and the other column contracts. Is there a way to keep the gridview column sizes the same after postback?
View 2 RepliesI have a gridview where I am opening a popup page when user selects a row. If I am not using update panel then Select button is able to open popup page.
If I am adding Update panel, the popup page is unable to open. What could be the cause?
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I have a gridview control that extends the default gridview. I have added an attribute called "hiddenSelectedValues" to to the gridview during the "PreRender" event and I have a private variable that points to the value of that attribute.
I have some javascript code that modifies the value of this attribute based on the user checking or unchecking checkboxes in the grid. I have confirmed that the javascript is indeed modifying the value of the "hiddenSelectedValues" attribute by using Firebug to see the change as it happens.
However, once a postback occurs, the grid looses the updated value of this attribute and I am unable to reference get the updated value on the server side.
How do I keep the value of an attribute changed by javascript on postback?
I am using this command to get the value of a particular cell in the GridView: Question: Do you know why I do not get a value in strValue ?
There is definitely value in the grid.
protected void grid_RowCommand(object sender, GridViewCommandEventArgs e)
{
//proceed only if the Details button is clicked...
if (e.CommandName.ToLower() == "details")
{
//Get the row index selected...
int index = Convert.ToInt32(e.CommandArgument);
GridViewRow row = grid.Rows[index];
string strValue = grid.Rows[index].Cells[1].Text;
}
i am having trouble to set a new value to a specific GridView cell.
The value is passed from a javascript to the c# code behind where it should update a specific Gridview cell []:
I am not using editedtemplate.
code c# :
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In other hand I am using a JS code that set a GridView cell value.. The new value is set but as soon as i select another row on the GridView ..the Updated cell comes back to its original.
JS code1 :
setCellValue(selectedIndex,5);
JS code2 :
[code]....
What i need is a simple way to set a specific gridview cell with my passed JS variable.
I have a gridview and I want to update a cell with a session variable username. In the Gridview1_RowEditing event I have this code :
GridView1.Rows(e.NewEditIndex).Cells(5).Text = Session("username")
It does not give me any errors and seems to work but the grid view cell do not take this session. When I'm clicking on the edit hyperlink this event is triggered.