C# - Showing Gridview When No Data Present
Apr 18, 2011
I'm working on a ASP.NET website project using VB.NET as backend code. I was looking for a way to show the header/footer of a gridview even if no data is present. I'd like to use this solution as it looks pretty clean (although it's written in C#): link I have converted the code using an online tool, resulting in: [URL] This however shows an error on line 77: "Events cannot be declared with a delegate type that has a return type"
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Sep 23, 2011
My gridview is showing more than one ProductName column and the ProductID column as well.All I want it to show is the Product Name clickable column.
<asp:Content ID="Content2" ContentPlaceHolderID="body" Runat="Server">
<br /><br /><br />
<asp:linkbutton id="btnAll" runat="server" text="ALL" onclick="btnAll_Click" />
[code].....
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Jan 29, 2010
I have two GridViews, the first works fine as I defined the datasource when I dropped it onto the asp page via visual studio and I specified the table to use.
The other GridView (dgvParams below) has just been dropped onto the asp page and I want to use it at run time[code]...
When I step through the code I can see row and column counts are as expected and call "dgvParams.DataSource = table".
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Apr 2, 2010
In order to avoid clashes between drivers in my taxi system I want to be able to choose available drivers when filling out the booking form. In order to do this I needed to:
Select all records in "column" from "tableA" which are not in "column" in "tableB".
I have this:
Private Sub BookingFillDriverComboBox()
con = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:My DropboxDocumentsTaxi Service ProjectDatabaseTaxiProjectDatabase.accdb;")
con.Open()
[Code] .....
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Jun 10, 2011
How to print the contents present in the gridview using Vb.net
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Apr 1, 2011
I have the following code on my page
[code]
Imports System.Data.SqlClient
Imports System.Data
Partial Class _Default
[Code].....
and I can see that my values are passed to my variables when I debug the code but the results for my datatable show 0 rows.
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Sep 24, 2009
I want to show items in my gridview as a 5 across and a 5 down display - I already have the query pulling only 25 records per a page but cant seem to make the gridview do what I want
Example:-
record 1 : record 2 : record 3 : record 4 : record 5
record 6 : record 7 : record 8 : record 9 : record 10
etc ...........................................
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Apr 29, 2009
i gave input text file. now i should copy the contents of the text file.need code.
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Jul 18, 2012
In a nutshell...I have developed a site in ASP.Net and VB.Net which allows a user to create an order and submit it to a SQL Server backend database.
When the order is placed...an xml file is also produced, showing the items that have been ordered...which is then loaded in to a program to update stock quantities.
The code I have is as follows:
Public Sub butSubmitOrder_Click(sender As Object, e As EventArgs) Handles butSubmitOrder.Click
Dim sqlConn As New SqlConnection
[Code].....
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Jul 17, 2011
I am not sure why this code doesn't work. I have follow according to the table field data and it I am still unable to get the SQL Datareader to work. I have checked the tables and all datafields, everything is correct. But I still am unable to read data from the database.
Dim connectionString = ConfigurationManager.ConnectionStrings("CleanOneConnectionString").ConnectionString
Dim myConn As New SqlConnection(connectionString)
myConn.Open()
Dim cmd = "Select * from [Member] where Email = @Email"
Dim myCmd As New SqlCommand(cmd, myConn)
[Code] .....
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Dec 26, 2009
I did this code to iterate through the data present in the DataTable:
Imports System.Data.OleDb
Public Class Form1
Dim con As New OleDbConnection
[Code]....
But this code always gives the last value of a particular row as its output.
I want to specify a particular column and a particular row of the DataTable and fetch the corresponding result:How to do this?
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Mar 7, 2012
I'm trying to use the .NextResult() method of a DataReader but I get an error that no data is present.
The 1st query returns a value but the 2nd query is the problem.
Dim strSqlStatement As String = "Select Count(*) As TotalRows " & _
"From Parents " & _
"Where (FatherName = @SearchValue " & _
[Code]......
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Dec 21, 2010
i am using visual studio 2005 check my code and let me know what i am doing wrong
[Code]...
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Dec 27, 2010
Can you maybe tell me what is wrong with this code?I get an error on the line were the writing is in red.
db.OpenConnection()
strSQL = "SELECT * FROM ChaletBookings WHERE BookingNo = '" & strBookingNo & "'"
dr = db.getData(strSQL)
[code].....
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Mar 25, 2009
When I run my application the following code prompts an error. Ideally, I want to populate the TxtOracleNo with a value read from another table on my form based on certain conditions i.e., prac_no, prac_eid and pay_method is the same in both tables then populate the Oracle No on TxtOracleNo text box.
The error given is
"Invalid attempt to read when no data is present"
The function is shown below
Private Sub Oracleview()
'Open the database.
'Delete any existing record
Dim cmd As New SqlCommand
Dim conn As SqlConnection = GetDbConnection()
[Code] .....
I checked that data in the database and it is available in both tables. Probably, the problem is where I call the function. Presently, I call it on loadform.
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Mar 8, 2011
What I'm trying to do is to write a generic rss reader that I plug in any URL into without worry if the feed has all the common properties. For instance in my example below I'm looking for pubDate, however if no pubDate exists in the xml I'd like to return the current Date. I cannot seem to get the syntax right though.
Dim xmldoc As New XDocument
xmldoc = XDocument.Load(url)
Dim feeds = From feed In xmldoc.Descendants("item") Select New With { _
[code].....
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May 10, 2010
I have 5 combo boxes that need to show the same list of items that come from a single dataset table. I have managed to bind the datatable to the combo boxes no problem at all.. but when I run the application and select an item from one of the combo boxes all the others change to the item I selected. After some research I believe that this problem is something to do with using the one datasource so I have tried assigning the dataset datatable to 2 different variables and used them as datasources for 2 of the comboboxes but the same still happens.
A work around to this I can see is to call the same methods and SQL select statements 5 times over to get individual datasources for each combo box but this doing that sounds crazy to me. how I can get around this easily? Code snippet below shows 2 combox boxes and their datasources. I'm using VS2005, .Net 2
ComboBox1.DropDownStyle = ComboBoxStyle.DropDownList
ComboBox1.DataSource = AllergyListDataSet.Tables("ListOfAllergies")
ComboBox1.DisplayMember = "Condition"
[Code]....
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Sep 8, 2011
i was wondering if there are other ways of showing data coming from the database.currently [ as per in my previous thread] i am using a [bind] datagridview.e.gthe table has
id, name, quantity
im thinking that listbox could be one, but it just shows 1 [e.g name].
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Aug 20, 2009
I have a number of controls (Device1, Device2, etc.) that all inherit from BaseDeviceControl. In the DragEnter event handler I am trying to test for the correct type by using the BaseDevvceControl like this....
[Code]....
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Apr 11, 2011
i want 2 select data from data gridview and want retrive that data into another form in to the textbox ...is it possible ? i 'm doing like this for that
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.[code...]
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Jun 5, 2011
I m using visual studio 2010, I am trying to show the week days in Combo box but its not showing when i run it.
Class MainWindow
Private Sub ComboBox1_SelectionChanged(sender As System.Object, e As System.Windows.Controls.SelectionChangedEventArgs) Handles
[Code]....
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Jul 18, 2012
im having a problem on my sql command. here is my command
select ProductCode, ProductName, qtyinstock, critical
from product where qtyinstock <= critical
[code].....
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Feb 1, 2011
i can't get the data to be shown in the datagridview what am i doing wrong here? i think the problem starts in the ---- if then statement
[Code].....
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May 22, 2012
I have looked around quite a bit, and nothing seems to answer my question in particular. I have DataGridView in which I add rows and columns dependent on a certain record count of geospatial data that is held in ArcGIS. The data is then passed through to the gridview for editing. So I do not use any databinding methods, rather it is a very manual process. I store data into a two-dimensional arrays, which indexes are based off of those certain data record counts. After the loops are complete, the data should be stored in each cell dependent on index. The very last row that was populated is populated perfectly, yet the other 72 (or so) rows are blank. Here is the code as follows:
[Code]...
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Oct 20, 2009
I am a newbie to .net and am using vb.net 2005 and ms access. I've made a crystal report but the prob is the report displayed has only the headings and no data... and this happens when I add more than 1 table, single table report works properly.
I've used
Dim cryRpt As New CrystalReport1
CrystalReportViewer1.ReportSource = cryRpt
CrystalReportViewer1.Refresh()
and
Dim cryRpt As New ReportDocument
cryRpt.Load(My.Application.Info.DirectoryPath & "CrystalReport1.rpt")
CrystalReportViewer1.ReportSource = cryRpt
CrystalReportViewer1.Refresh()
as the codes...
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Oct 1, 2010
I am just learning vb.net using vs 2008. I have a small forms app which I have conected to a small, single table 2 column database. I enter some numbers into a text box, press a button and the data gets entered into the dbase. However the only data that gets displayed in the data table I have on my form is the existing data.No new data entered is shown until I close down and restart the app. I have tried many times using statements such as [code]...
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Apr 16, 2010
Okay I have everything working as it should but when I first start up the data doesn't show up in the datagridview until I enter another record. It seems to be at the End Sub part of the button click Enter Record.This is what I have at form load event.
[Code]...
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Aug 4, 2011
The code I use:
Dim enc As New System.Text.UTF8Encoding()
TextBox.Text = enc.GetString(datas)
datas's type is Object, and its value comes from a .dll file that contains some data, such as "The web page address is www......"
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Jun 11, 2011
My database name is "plant3", i have a table named "itemlist" which has a field named "itemname", "task", and "status". I want to show the itemname on combobox and when user choice an itemname the program will show all task and status for that item.
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Mar 29, 2012
have 6 columns in my listview that should show the data from the database.. but when i coded it like this :
Public Sub showmyrecords()
Dim dt As New DataTable
Dim ds As New DataSet
[code].....
it shows the first row data(database) in the first column of my listview... how should i solve this problem?
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