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
Create A Loop To Retrieve A Column Of Data From Gridview
View 3 RepliesI can retrieve records from my Database fine, but I'm having trouble updating records. I am getting a syntax error on [code] I get this error when I change the Last Name (Row 0, Column 1). [code]
View 4 RepliesI am fairly new to VB and I am struggling with not using the Reverse string.I need to take a persons name from a text box and print the name backwards in a label using lop and the MID function.I have this, but it doesn't use the MID Function, how would I change it.
Private Sub convertButton_Click(sender As System.Object, e As System.EventArgs) Handles convertButton.Click, ClearToolStripMenuItem.Click
Dim Name As String = ""
[code].....
I am trying to print out a triangle of stars with the longest side on the top. I have tried adding removing step, changing value of step, changing order of 5 to 1, 1 to 5 but I can't get it to reverse. I thought that is what step does? [code]
View 9 RepliesI'm in a pickle... either that or it's getting too late in the day. How do I loop through an array in reverse without using FOR?I have an array of string values, I need to loop through these values until I find the first instance of a value then stop. I have considered a sort on the array but each query would need me to sort it accordingly (the data in the array has many instances of the strings within strings I am looking for, e.g. there could be several 'to' but I need the first, there could be several 'from' but i need the last)When I find the instance of the string, I then need to grab specific data from that string.
[Code]...
i'm sure its very simple, but i couldn't find how to do it
my normal use of For Loop
For x= 1 To 100
bla bla
Next
how do i "count down" like this
For X = 100 To 1
I'm using vb.net. Usually I used the SQL Server SQLComamnd but here I need to use an ADO. I have this but I'm stuck at the end of it how to get the data? [code] How do I actually retrieve this record?Is there something akin to the SQLCommand that has Reader?
View 1 RepliesI wish to retrieve all records for a particular day. The user can choose a date from a calendar and once click on ENTER,all the records for that day will be display out. I am able to choose the date using MonthCalendar and display it onto a label. But the sql statement of displaying it onto a datagridview shows no result.
This is my sql statement:
HTML
MyCommand = New OleDbCommand("SELECT * FROM cable WHERE 'Date_Time' = "& Label6.Text,MyConnection)
My records in MS Access is in this format:
mm/dd/yyyy xx:xx:xx AM/PM
I need to reverse a string of words without using the reverse function. This is what I have so far, BUT it only shows the last two letters. For example: if i type "John" it will only give me "ho"
Public Class frmReverse
Dim original As String
Dim New1 As String
[code]....
I need to this without using things we haven't seen in class.
I would like to do like this...When I click a button, it will capture the times the button had been click retrieve 10 records at one time...For example, when the button being click for first time, it will retrieve the first 10 records and put into 10 textbox. Then if the the button being click for second time, it will retrieve the records from 11 to 20 and put into 10 textbox and so on. I had the following codes:
[Code]....
Okay, So I am trying to get my vb.NET Application to retrieve all the data in the database. My connection to mySQL is working and i have been able to fill a DataGrid with data from the database a function[code]...
View 13 Repliesi'm having a gridview which is binded to a dataview, OnPageLoad i'm populating gridview records. and i have a textbox and a button, So now i want to add more Records to GridView but this records should not be get added into DB, they just added to the page and of course the default records which are coming from db stay.
<asp:GridView id="gvItems" runat="server">
<Columns>
<asp:TemplateField HeaderText="Item Code" SortExpression="ItemCode">[code]....
Basically at first Data From DB comes to page then after that Textbox data should get appended to the Gridview but Db should not get updated. i tried to do it by keeping DataView in ViewState or Session variable but later i came to know am going in a wrong way and that this won't work since Dataview can't be Serialized. i just need an idea or right path to do this, is this possible what am doing? [my alternative option ]: create a temp db table and save it... but i don't want to use this option..
Is It Possible To Show Only Particular Records In Gridview With Req. There are 2 textboxs to accept from date and to date. I will be comparing the fromdate value and todate with the table column. If the record matches then only that row will get display in the datagridview.
View 8 RepliestheyI had a asp.net (vb) web application to store work overtime (OT) records. In SQL server, the OT table likes this, e.g.:
[Code]...
As user will input previous date OT records, so the records in db will not be in sequence. the date of records#14 is before records#13. if user want to know which OT records cover the last 2 hours, the system should retrieve record #15 (90mins) & #13 (30mins) because they covers the final 2 hours. How to write the SQL statement to retrieve the records?
Is it possible to have a quick and easy way of retrieving the last 10 records from a table?
Currently what I have been doing is retrieving all the records then one-by-one cylcing through each record until I have the last 10. To me this seems to have a lot of over-head reading each record. I just wondered if there was a quicker way of doing it.
Like we can retreive all the records from a table using this method:
While (Not rst.EOF)
....
End While
How to retrieve all the records when using OleDbConnection?
Dim cmd2 As New OleDbCommand("SELECT Product_name FROM Products WHERE Quantity <= 5 ", cn)[code]..
This code outputs all the products in a list box which are below a quantity of 5, however for those products i wud also like to retrieve the maximum stock level which was assigned to all of them so i can calculate how much more is needed to fulfill the maximum stock level
Here is what I'm working with:
Dim connstr = "data source=mydatasource;initial catalog=gcs_dw;persist security info=True;user id=myuser;password=mypassword;Asynchronous Processing=True"
Dim sqlquery = "SELECT * FROM Customer WHERE CITY = 'Anytown'"
Dim connection As SqlConnection = New SqlConnection(connstr)
connection.Open()
[Code] .....
As you can see, I'm attempting to display the results of the query to the commandline and currently all it is displaying is "System.Data.SqlClient.SqlDataReader". Where are the results of my sql query going and why can't I retrieve them?
I know this is basic, but my mind is totally blanc. I'm trying to retrieve all records from a table with a specific code.
Dim cmd As New MySqlCommand("SELECT myValueRow FROM myTable WHERE searchRow = 'test'", myconnection)
myreader = cm.executereader
[Code]...
I have a GridView, without using SelectedIndexChanged, how can I retrieve the value of each row from GridView when click on each button in each row?this is my aspx code
[Code]...
How to display whole records from database in Gridview and also do filteration using textbox ?
View 1 RepliesThere are 2 textboxs to accept from date and to date.
I will be comparing the fromdate value and todate with the table column.
If the record matches then only that row will get display in the datagridview.
I tried using the following codes but it's not working,
Dim Con As oledbconnection = new oledbconnection()
con.connectionstring = "Provider = Microsof.jet.OLEDB.4.0; Source=c:\program file\database.mdb"
dim sqlcmd as oledbcommand = new system.data.oledb.oledbcommand()
sqlcmd.commandtype=commandtype.storedprocedure
sqlcmd.commandtext = "query"
[Code]...
i have a button in gridview whose command name is "hold" i want when i click n hold button of first row then the whole row values will be transfererd to default2.aspx ...
and if i click the hold button of gridview second row then the second row value will be transferred to Default2.aspx ,,how to do that ?
i m using that ...but it always transfer the 1st row value even i select first last or middle row ..in gridview ....
[Code].....
i have a gridview and inside i have a TimeSelector, but how am i going to retrieve the time from the gridview cause if normally it is a TextBox we will use this Dim rbSelect TextBox = DirectCast(GridView2.Cells(1).FindControl("TextBox"), TextBox)so how should i retrieve the time from the timeselector in the gridview?
time picker control:
<%@ Register Assembly="TimePicker" Namespace="MKB.TimePicker" TagPrefix="cc1" %>
<ItemTemplate>
[code].....
I am databinding my gridview in VB code behind. Because of this I know I can not refer to the NewValues when text is entered into one of the edit boxes. I need to retrieve the value of a column in the RowUpdating event.I have tried to do this in a multide of ways, but each of my changes ends up breaking something else.None of these three methods is working....
Dim DT34 As String = DirectCast(GridView4.Rows.FindControl("Textbox1"), TextBox).Text
Dim TB1 As Label = GridView4.Rows(e.NewEditIndex).Cells(0).FindControl("Label1")
Dim tb1 As TextBox = GridView4.Rows(e.RowIndex).Cells(0).FindControl("TextBox1")
Dim IDVal As String = tb1.Text
In the following code, I am believe it is finding the control but it is not returning the value that was entered into the textbox.
Dim tb As TextBox = DirectCast(GRD4.Rows(index1).FindControl("TextBox1"), TextBox)
updateDescription = tb.Text
My field has been converted to a Template field in the Gridview instead of Boundfield.
I have a .aspx search screen that displays the results of the search in an asp:GridView component. There can be up to approx 1000 records returned by the search. I want to implememt paging on the grid so that only 15 records are displayed at any one time and the user can page through the results.
I am retrieving the records by passing search parameters to a WCF service which returns a List of particular entity objects. I create a Datatable and insert one DataRow per entity object from the List. I then bind the grid view to the Datatable.
This is how my grid is defined in the .aspx page:
<asp:GridView ID="gridCat" runat="server" AutoGenerateColumns="False" DataKeyNames="CatalogueID"
HeaderStyle-CssClass="fieldHeading" RowStyle-CssClass="fieldContent"
[Code]....
Is there a better way to do this (or am I doing it wrong)? If not, which of the 3 options do you think is the best? I'm leaning towards option 2 as I don't think option 1 is performant and I don't want to be sending loads of unnecessary data back to the browser as per option 3.
I am loading 25000 records into my gridview with 70 Columns and it is crashing.
Why is it crashing?
I want to display dataset records in textboxes instead of GridView. I also want to provide next, previous and search option to navigate between records in the dataset. And I also want to provide update and delete buttons to update and delete the current record that is being displayed.
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