how to sum upan specific columns in gridview using linq? I can't find anything in Google regarding this topic.
I tried this but not exactly what I want to be the output.
Dim total = Aggregate rowItems In Gridview1.Rows _
Into Sum(Cdbl(rowItems("AMOUNT")))
How can i lock specific columns in a data gridview
View 4 RepliesIn 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?
View 2 RepliesI wonder if it is possible to find a specific row and specific columns in data base file (Access) . You see , I am using a DataGridView control to show only SOME of the columns (fields) of a table from an Access file . For example , lets say that in the DataGridView control I only show the following fields :Field1 , Field2 and Field3 .Now , when the user selects an entry in the DataGridView control , I want to insert the text from Field4 into a text box on the form .
The problem , however , is that I don't know how to get the specific row in the data base file and also I don't know how to get the text in column (field) Field4 of that row .One thing that might be important is that the index of the row in the data base file is not necessarily the same with the index of the current row in the DataGridView control . This is because in the DataGridView control the rows are order by the contents in the ID Field .ol .
I have a gallery which holds a large number of thumbnail images and I want to show 6 at a time.
I have this working using the code below, but I can not get the images to display as 2 rows of 3 - it shows as 6 rows of 1.
I can get the desired result by using a datalist but that stops the pageindex function from working.
I'm sure there's an easy solution but I can't figure it out.
<asp:GridView id="GridView1" runat="server" AutoGenerateColumns="False" AllowPaging="True" PageSize="6" onpageindexchanging="PageIndexChanged" PagerSettings-Mode="NextPrevious" PagerSettings-NextPageText="Next" PagerSettings-PreviousPageText="Previous">
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Remove columns in gridview?
View 1 Repliesan aspx page where a user can upload a file to the webserver, and then then webserver can bind the csv file to a grid view, and allow the user to mark what fields are what.here's my code to bind the csv file:
uploadFile = CType(Session.Item("uploadFile"), String)
Dim sConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" _
& MapPath("~/upload/data/") & ";
I've got a gridview with two buttons in it. I would like to determine which button has been pressed in my VB code. Is this possible? I've been able to determine which row number has been pressed, or what the value of the first element in the row is, but columns don't seem as easy.
View 14 RepliesI want to bind Grdiview with DB.I have a table Products with three columns.Suppose I add three columns at design time in gridview, If I run my following code First Three columns are blank & next three columns are bind with data.
Suppose I do not add any column in GridView & runs the foll. code,then the output is coming correct.
But i want that I add columns at design time
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This is a follow up to my previous question: Filter DirectoryInfo files by date in asp.net
I have a gridview that is populating data from DirectoryInfo. However, I only want to display certain columns, and customize the column names and the hyperlink value in the row.
My code is:
Dim files As FileInfo() = New DirectoryInfo(strDirectoryPath).GetFiles().Where(Function(x) x.LastWriteTime >= (dtStartDate) AndAlso x.LastWriteTime <= (dtEndDate)).ToArray()
[Code]....
How can I loop through the columns, to display only "name", "extension" and LastWriteTime?
[code]How can I skip certain columns of the gridview? For example: Columns 1, 3 and 6.
View 1 RepliesWell i have a list of objects List<UserDC> now i would want to display this in some kind of grid so i tryed the GridView[code]...
this just gives me a exception ArgumentOutOfRangeException how do i make it generate the columns before it displays the list so i can filter out those that i dont want?
I am trying to program my page in vb.net and asp.net so that when a user clicks on a column heading of a gridview, the data is sorted either in ascending or descending order. note that my data is coming from an SQL Server Express database. So far, I have done it so that the gridview can be sorted:
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I have a variable defined as follows:Dim iRows As List(Of String())I've also been converting that to a list of lists just to make it easier to work with.Dim iRows As List(Of IList(Of String))I would like to bind that list to a GridView using the contents of the nested array/list to dynamically define the columns. I don't know ahead of time how many columns there will be, but I do know that they are all the same throughout the list.
View 2 RepliesI am using dataset in my project.After filling all the tables in dataset,i want to perform join queries on tables.i dont know how to do that...Also i want to fetch few columns in a gridview from dataset table.I can't use ds.tables("student").select(name,roll)....
View 1 RepliesI am trying to format the width of my gridview columns dynamically for easy of use in editing and updating. Is it possible to have multiple column widths defined? Here is the code I am using to create the gridview...
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
[code].....
I need a way to insert DataTable to asp GridView that contains already built Columns with turning autoGenerateColumns to False I just need to connect some DataTable's Columns to specific columns in Grid and
change other stay as they are
I have Dataset ds filled up with values Until now I was displaying values in GridView. Now I want that all the rows should be columns and columns should be rows.I have 2 options: Either 1 I can directly convert grid to columns and display it, or 2 I can convert the GridView to html and then write loops to convert. I was trying the 2nd option but I cant figure out how I should do that.[code]With this code I am still getting same as GridView. Please help me for converting rows to columns and vice versa.
View 1 RepliesBasically I can get all the data within the grid present in the "print preview" however they are not within the right columns , and all the data overlaps , making the printout look very messy !
I need to be able to get all the data into their specific columns , e.g all the names under the name column .
This is my code so dar =]
PrintDocument1.DefaultPageSettings.Landscape = True
Dim Myfont As New Font("Courier New", 10, FontStyle.Regular)
Dim MyFontSmall As New Font("Courier New", 8, FontStyle.Regular)
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LINQ drives me crazy. Why does following query not return the duplicates, whereas it works with only one identifier? Where is my error?
[Code]...
I am trying to make a simple search method using sql to linq in visual studio. In my database, i have the fields "Firstname" and "Lastname", and my search string is "name". How can i make a simple linq query which searches both fields?
in plain SQL i would do something like this: "SELECT (Firstname + Lastname) as 'Fullname' FROM table WHERE Fullname LIKE '%searchstring%'
I'm trying to get LINQ SQL to grab and total this data, I'm having a heck of a time trying to do it too.
Here is my code, that doesn't error out, but it doesnt total the data.[code]....
This doesn't seem like something that should be confusing or difficult, but I'm having a hard time finding the answer to this problem. I want to copy columns with their data, not rows, from one large DataTable to a smaller one.I have a DataTable with many columns of data (around 20), and a string array of the columns (4 ) that I want in the copied DataTable. Is there a reasonable way to accomplish this task?
View 1 RepliesI only want specific columns to show up in my DataGridView, so I run a dynamic sql query to select specific columns from a table on a sql server(I know its slow, but its only used once a day). However, every column from the table shows up in the datagrid, and I can't figure out what i'm doing wrong.
Public Class Assign_Priorities
Dim connect As New SqlConnection("Data Source=IRNTS4SQL;Initial Catalog=Materials;Integrated Security=True")
Dim ds As New DataSet
Dim da As New SqlDataAdapter("SELECT [Priority], [Tool Type], [Lot Number], [Process], [Priority Notes], [Quantity], [Time Job Entry] from [FPAD Process Log]", connect)
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i have a data grid in my form.It has 3 colums.On clicking the second col I want to put a value of 1 in there.I tried using datagrid click event but nothing happens in fact the the program wont even go there.[code]
View 2 RepliesIs it possible in to filter out certain columns from a datatable? If suppose a datatable dt1 has 3 columns and I want to have a new datatable dt2 with the values of only 1 column from dt1 then what is the best approach to do it? I know a rowfilter exists for dataview of a datatable but there is no column filter as such.
View 3 RepliesI re-wrote this to make it more readable. If you want to skip right to the chase, look at the ALL CAPS comments in the code blocks. All necessary code has been included for debugging. I've searched multiple forums (including ASP.NET), and the MSDN library and cannot fix this >.<
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GridView SORTING of DYNAMIC Columns and Data Source Scope
View 2 RepliesI have a list of attachments that I need to group by clientCLID and EmailAddress. From this grouped list I only need a list of clientCLIDs. After fiddling for a while I've managed to get it to work as follows:
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i am getting a syntax error at drr(5) which 5 is the column i want to base the color change on. this method works when i am using a dataset
Dim Land As String = "Land"
Dim Air As String = "Air"
Dim Cruise As String = "Cruise"
[Code].....