I am using VB. ASPNET2008 to develope Web Application. I am not sure whether to insert control DATAGRID or DATAVIEW. Also, what Reference Library am I supposed to use in order to use the Control.
View 9 Replies
I've been working on this error all day! I have a dataview created from a sqldatasource control and I'm trying to assign it to a gridview but I get Object reference not set to an instance of an object.
Code:
Try
Session("dsCustomer") = "Y"
[code]......
Can't I assign a dataview as a datasource? Or not?
how to delete and update in datagrid on OnDeleteCommand and OnUpdateCommand.
View 1 RepliesUsing ASP.NET Web Forms.I am databinding a DataView to a DataGrid with AutoGenerateColumns set to trueThe final column of the DataView is not rendering.Using the debugger I can see that the column definitely exists in the data grid's datasource. The column is of type decimal and some of the rows in the column have data in them.The column has a column name.The other columns are rendering fine.What's going on?Some more infoFunnily enough, I can set AutoGenerateColumns to false, then just add the columns manually:
datagrid.Columns.Clear();
foreach(DataColumn column in dataView.Table.Columns)
{
datagrid.Columns.Add(new BoundColumn {
HeaderText = column.ColumnName });
}
datagrid.DataSource = dataView;
This works fine. Why can't .NET do this with AutoGenerateColumns?
I've got a datagrid which i wanted to sort, since i dnt have much knowledge of .Net, so what i did was to save that datagrid in a DataTable, then again save the same DataTable in a DataView, then apply sorting on that DataView. this is the code, and its working fine.
Code:
protected void dgEOBSearchResults_SortCommand(object source, DataGridSortCommandEventArgs e)
{
DataTable dtEOBDocumentListTable = (DataTable)Session["sEOBDataTable"];
if (ViewState["sortExpression"] == null)
[code]...
but the issue comes when the i try to sort the Date Column, the dates are in MM/DD/YYYY format, so if i try to sort the date column, the dates are sorted on month basis, rather than year basis. now i cant change the date format, is there any way to sort dates in DataView?
Does anybody have an example on how to query a dataview and populate a dropdown? I'm having a hard time doing this:
[Code]....
I am having datagrid in that I have one column that should have table. Now I want to know that how can I include table in datagrid. My table values may differ from each rows in datagrid.
View 1 RepliesI have the following code in place:
[Code]....
and the following stored procedure:
[Code]....
The Dataview control is not appearing when the page is loaded. Has anyone any ideas ?
This is my Table structure:I did this in vb.net and this code displayed the images in the DataGrid:
Code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If IsPostBack = False Then
but when i am doing the same code in C#;then its not working:
[code]....
Code:
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
[code]....
i do have two textbox and a datagrid control to insert into a single table
how can i do that using code(I mean using command object)
I am using updatepanel in aspx with master page content, required validation control. IN that updatepanel I have one datagrid through that I am trying to insert a row. When I click that linkbutton then is shows error like "sys.webforms.pagerequestmanagerparsererrorexcepti on. Error code: 405" . I tried with another project this code works fine. How to overcome this. Some times error code 12031 also appear in prompt window. Error Received: The HTTP verb POST used to access path '/PMS/Marketing/' is not allowed. Stack Trace: at System.Web.DefaultHttpHandler.BeginProcessRequest( HttpContext context, AsyncCallback callback, Object state)
at System.Web.HttpApplication.CallHandlerExecutionSte p.System.Web.HttpApplication.IExecutionStep.Execut e() at System.Web.HttpApplication.ExecuteStep(IExecutionS tep step, Boolean& completedSynchronously)
Source:System.Web
Origin: [URL]
Target Site:System.IAsyncResult BeginProcessRequest(System.Web.HttpContext, System.AsyncCallback, System.Object)
Exception Thrown @7/26/2010 10:11:21 PM
I want insert data's via Datagrid,How Can Do That
View 2 RepliesI want to do something like this by using the HoverMenuExtender present in the Ajax control toolkit:When i hover the mouse over the gridview rows then the edit and delete options will come for each and every rows present in the gridview.I had a look at the sample website of the ajax and found that they used the ObjectDataSource but i dont want to use it.
any alternative to do the same without using the ObjectDataSource ?
I am having datagrid in that I have one column that should have table. Now I want to know that how can I include table in datagrid. My table values may differ from each rows in datagrid. So that also should be accomplished.
View 3 Repliesi would like to ask about the design pattern of insert/update/delete record in the datagrid.
my page have 3 datagrids, each datagrid display different data.
but when clicking the save/update/delete button, how can i write a good progrmming pattern to perform this action.
any example code for my reference?
OK, this may be a little difficult to explain, so I will try my best and post the code I currently have.
I have a table with a list of usernames. I have the list of usernames displayed on a page through a GridView. What I am attempting to do is for each username in the column "adminUsernames", I need to insert a set of values in another database table for EACH "adminUsernames" that exists. Example: There are 2 adminUsernames vales in 2 seperate rows. These are "Admin 1" and "Admin 2". For each adminUsername values (Admin 1, Admin 2), I need a row interted in another database table. Maybe the code that I have (that does not work) will help you see what is happening:
[Code]....
I keep receiving this error when running: [Code]....
I don't think there's an easy way but thought I would ask. I'm currently retrieving a table from my db and binding it to a datagrid with the AutoGenerateColumns on. One of the columns is a date and it's displaying time although it's always 12:00:00. I'd like to display the short date format in the datagrid. Is there an easy way or do I have to manipulate each row or bind the columns individually?
View 1 Repliesusing .net 4 and vs2010
I'd like to get the text value of a column of my datagrid and insert that text into the subject line of an email.
The partial code I've tried is below in bold, however, it does not produce the correct result.
[Code]....
I've also tried various other inline expressions, including <%#DataBinder.Eval (Container.DataItem("FullName")) %> and <%# Eval("FullName") %>
Recently, I am working on the datagrid, where I want to make datagrid as an input control where I would place textbox into a single cell, also the same way I want to include a datagrid control and calendar control? How would I do that?
View 6 RepliesI've created a custom gridview control with a custom datacontrolfield as well, which enabled me to have textboxes in the headercells of the gridview so I can filter each column value.
Now I've added textboxes to the footer row as well so I can allow users to insert data directly from the grid.
this is a portion of my gridview aspx code:
Code:
<FooterTemplate>
<asp:LinkButton ID="lbInsertCN" runat="server" CommandName="Insert" ValidationGroup="addCN" >Insert</asp:LinkButton>
<asp:LinkButton ID="lbCancelInsertCN" runat="server" CausesValidation="False" CommandName="Cancel" Text="Cancel" ></asp:LinkButton>
[Code] ....
As you can see, I added an Insert and Cancel button in the footer row. Then I have my custom column. Now in the rowdatabound event of the grid, i'm trying to hook up the linkbutton click event to a handler:
Code:
Protected Sub nsGrvContainer_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles nsGrvContainer.RowDataBound
Select Case e.Row.RowType
Case DataControlRowType.Footer
Dim lbInsert As LinkButton = CType(e.Row.FindControl("lbInsertCN"), LinkButton)
AddHandler lbInsert.Click, AddressOf odsContainerNumber_Inserting
End Select
I find the control fine, but the click event never fires.
I want to pick the date from the table(Oracle) & want to insert it into the another table. In Pic see,I am picking the date of the second row. I convert the date to the dd/MM/yyyy format
Code:
TxtHiddenCtrl .Text = DateTime.Parse(ds.Tables[0].Rows[0]["FROM_DATE"].ToString()).ToString("dd/MM/yyyy");
Code:
?TxtHiddenCtrl.Text
"05/10/2001"
If I dont convert the date then
Code:
TxtHiddenCtrl.Text =ds.Tables[0].Rows[0]["FROM_DATE"].ToString()
"10/5/2001 12:00:00 AM"
I convert the date!
Now when i save the date into another table
Code:
cmd.Parameters.Add("@p_FROM_DATE", TxtHiddenCtrl .Text );
Error is dere not a valid Month!Why the error is coming?Its a valid month?
I want to have footer to insert the records in Gridview,I m binding the Gridview with the DataTable.
On page load ,I have no row in DataTable,SO Gridview is not shown.SO i insert the one row in DataTable on Page load so dat the Gridview is displayed.
I want to ask that is it possible to display Gridview on page load ,widout havng a row in DataTable because on page load I do not have any row in Datatable
Code:
[code]....
I have three web forms to insert, read and edit data. I want to display single records on each page. My pages consist of textboxes, listboxes, and images. I currently achieved reading, inserting and editing using a datareader and parameter queries. I'm wondering the best way, to design web forms. Can i use stored procedures. Using stored procedures; is more secure or not, is more stable or not,
View 9 RepliesEnvironment: IIS 5.1 , OS Windows XP, SP3 , I.E 6.0, SQL Server 2008 and Visual Studio 2008I am quite new to development. I developed a small web application on VB.NEUser will login with UserID and Password, select the only Excel file and click 'submit' button. On Submit button, selected Excel file will be transfered from one location to another on network and insert the Excel column data in SQL server 2008.
View 3 Repliesi'm trying to use Entity Framework to insert into SQL SERVER 2005, using Visual studio 2008.the following codes are a Button onclick event,I want to insert into DB multiple rows at a time
[Code]....
however this does not work, it seems we can only insert into DB only one row at a time
