Forms Data Controls :: Set The Gridview Display=false If The BegBal Variable Above =0?
Nov 23, 2010
i calc the sum of columns using:
begBal = Utilities.SumDataColumn( "begBal", dt);
Then in the rowDataBound event i add the total to the gridview footer:
[code]....
I would like to know how i can set the gridview display=false if the begBal variable above =0?
also I set the format of amount columns in the html and code as {0:n2}. How could i add a check box to show no decimal places {0:n0} in the grid (columns and footer)?
I have a gridview that binds an integer value to a column and I want to set the display text to "true" if the value is 1 and "false" for all other cases.
Can this be done with FormatTextSTring or will i need to check the values in the gridview_rowdatabound.
Nested GridView Control returns "Object variable or With block variable not set" when outer GridView returns rows.
The Nested GridView Control works as long as the outer GridView returns rows, the following code works: [Code]....
Object variable or With block variable not set.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object variable or With block variable not set.
Source Error:
Line 118: If e.Row.RowType = DataControlRowType.DataRow Then Line 119: Dim myStatus_ID As SqlDataSource = CType(e.Row.FindControl("sqlDeviceStatusAssign"), SqlDataSource) Line 120: If Not e.Row.DataItem("Status_ID") Is Nothing Then Line 121: myStatus_ID.SelectParameters(0).DefaultValue = e.Row.DataItem("Status_ID") Line 122: End If
I have tried checking for IsDbNull and checking to see if a label exists in a given row. This code *If Not e.Row.DataItem("Status_ID") Is Nothing Then* appears to do nothing.Same with the following:
*Dim localLblItemReference As Label = CType(e.Row.FindControl("lblItemReference"), Label)
To further clarify my question above, I am looking for a method to detect e.Row.DataItem("Status_ID") is nothing/null due to the outer GridView returning 0 results in a query.I have a (Outer) GridView Control with another GridView Control inside of a template field with it's associated SqlDataSource control.
In the "Protected Sub GridViewReport_RowCreated", I provide the Select Parameter for the associated SqlDataSource with the DataItem row value.When the (Outer) GridView Control does not return any rows, the "e.Row.DataItem("Status_ID")" throws a:
Exception Details: System.NullReferenceException: Object variable or With block variable not set.
I have a databound gridview using datatable as datasource. Template fields are used to edit the row content.This cell value should get updated in the datatable on text_changed event without using gridView edit. Is it possible to overload the GridViewEditEventHandler for this purpose.
I a using Gridview bind to a dataset. For this example, I am only setting up two columns.
1. Edit button 2. A template field that will display "No" and in Edit mode will show a checkbox.
When I run this code... the page is displayed... I click on the edit button... the row changes to edit mode and I CLICK the checkbox (can see a it checked).Then click on "Update" Button... which takes me to GridView1_RowUpdating event. If I check the status of the "box"... it's checked status is ALWAYS false Why?
I need to remove certian rows from the Gridview so that certian users can't see certian rows. I have a row databoud event that checks for certian fields in the row and disables the entire row based on the value of those fields. However, it dosen't work well because if my gridview has 20 or 30 rows I have paging so if it disables all but 2 rows the user has to click in the pages of the entire gridview until they reach that row.
<asp:ButtonField Text="Void" ButtonType="Link" CommandName="Void" /> ' RowCommand Dim f_iIndex As Integer = Convert.ToInt32(e.CommandArgument) Dim f_oSelectedRow As GridViewRow = grdMeterCorrection.Rows(f_iIndex) Dim f_oCertIdCell As TableCell = f_oSelectedRow.Cells(11) Dim f_sCertId As String = f_oCertIdCell.Text.Trim If e.CommandName.ToLower = "void" Then Dim f_bVoidRet As Boolean = VoidCert(f_sCertId) End If
The problem is the CertId field in the GridView has visible set to false. I think this makes the value unaccessable to the RowCommand.
Ive got a list of records in a gridview (from an SQLDataSource) where a field value is set to True. I've also added a "reset" button in a template field at the start of the row in the Gridview.
What I would like to do is allow the user to click the reset button on a particular row and 'reset' the true value to 'false' (updating the source data).
I have a gridview that serves as a confirmation for user input in a previous form from a previous page. The grid is databound to a temporary table where I store the user's initial selections. The user can confirm what they had submitted, (which may be more than one row of information, up to three classes) or go back and change. When they hit the confirm button, I loop through the gridview and enter a row in a permanent database for each row in the gridview. This works great.
However, I don't want the gridview to display all of the columns that are actually in the temp database, because I'm carrying over 'usersubmitted, datesubmitted', etc, from the previous page for each class selected and this is redundant. (I do need to use all of the columns when they submit, however, to make a new row with complete information for each selected class in the permanent database) So, when I set the usersubmitted column visible false, for example, in the gridview, the dataset table adapter insert function fails with a data type mismatch error. I'm assuming becuase the column has to be visible, becuase when I make it visible again it works.
Can you loop through a gridview and call on cells in columns that are not visible?
The first page is like this:
the user fills out his info once in text boxes
name ____
address____
then selects up to three classes in dropdowns:
class one dropdown ...
class two dropdown....
for each dropdown, I insert name, address, class selected into a temp db Second page.
Gridview should display only classes selected, one row for each, and not
I have a set of 4 buttons which part of a gridview template and I load the gridview on page_load. The datasource for the gridview comes via my controller as I am using Microsoft's Model View Controller design pattern. I set 4 public properties for each of the 4 buttons, which I can access in my controller class/method. However, when I call the method for the gridview, which sets the datasource for it on page_load, I get an error message when I try to set the enable to false. It says "Object not set to instance of object". The objective I am trying to do here is a check on a returned value, which I can achieve, and based on the return of the value that is returned, to either set the button enable to true or to false.
Unfortunately, I am getting this Object not set to instance of object error message, and I do not know how to resolve it.
I have an Objectdatasource configured with Select, Insert, Update & Delete queries in a Dataset. This datasource is linked to my Gridview. I do not require all fields in the table to be displayed or updated in my grid so i have turned off the Visible property on several.
However, when i go into Edit mode and trigger the UPDATE to the database table, i get NULL values updated in the columns i set False for the Visible property.
How can i remove these columns from the GridView and the Edit mode and still have them UPDATE with their current values instead of being overwritten with NULL's?
I'm attempting to create a mailto in a gridView as follows:Code Behind (Page_Load)
[Code]....
ASPX Page
[Code]....
The hyperlink field will not grab the mailString variable. It's blank whether I use my constructed string or just the basic "TEST" string. What am I doing wrong?
I'm having trouble getting selected rows in asp.net. i tried to debug it and found out that the answer to "chkRow.Checked" is always false eventhough it is selected. I'm new to asp.net.here is my code.
Protected Sub btnApproveYes_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnApproveYes.Click Dim modID As String = String.Empty For Each row As GridViewRow In gvModule.Rows
i have a gridview binded with data when i hover mouse to row i want to display a image button to display date ,and when i click the button i want to display calender control for choose date, and next step after i choose date it will be must insert into database. and mean while a hidden label control will display and date shuld be display in it
I believe my SQL statement is sound. UPDATE [062610] SET abc = @abc FROM [062610] WHERE (dayID = @dayID) I cant seem to get my stupid variable @abc to sync with my GridView update command. I understand that I can let the GridView take care of my editting for me without having to write any code. But, I am running multiple tables and will be eventually needing to do this manually. Or at least as far as I know.
On Page1 of a project, I have a Gridview showing a table of customer names (showing CustID, CustName, CustJoinDate). When I click on a record, I have passed a querystring to Page2 showing an address table for that customer. This part works for me.
The SQL statement in simply: Select * from CustAddress where CustID = @cust
What I would like to do though, is capture that @cust to a session variable so that I can use it later on.
My GridView is not updating when AutoGenerateColumns="false" and have TemplateField. It works fine when I comment out the BoundField and TemplateField and change the AutoGenerateColumns to true. Am I missing something?? Below is the markup:
