How to make the datagrid with no data when a user click's the button.I have a page with 2 buttons one is Load Data and Clear Data.If the user click's the CLick button will the data in the datagrid will disppear or not?Am using DataSet.
I have used ds.Tables.Clear() in that Click code .
I had called the data from query to data table and now i have a gridview in which i am using one datalist and 2 text boxes and and reming coloumns are bounded iahve to assiaign them values which datatable have either null or any value.
View 2 RepliesI have 2 grids gvParent & gvChild I would like to filter gvChild when a row is selected in gvParent the linking fields are contractNo
I added a column for selecting:
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Select"
OnClick="LinkButton1_Click" Text="Select"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
I know how to handle the filtering of the grid (create a criteria and set to rowfilter of the dataview) But, I dont know how to get the value of the column of the selected row.
I have Datagrid , i want to clcik on row and get data in textbox , but my textbox is FreeTextBox control,i tried to use javascript but work for asp.net control not working for freetext box control, how i can capture this code is sample code but it work for asp.net control but not working for my freetextbox
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Simply put... I want to duplicate the example found at this link, in VB.net rather than C#.
[URL]
I would like the selectedvalue of the dropdown to display additional data base on its selection in multiple text boxes.
I have tried using the DropDownList OnSelectedIndexChanged property, within a DataGrid EditiItemTemplate, but I cannot retrieve data from the selection. (AutoPostBack is "True"). I can however use a button onclick event to fire a "prre-defined" selection value.
I have 2 datagrid (using .net 1.1). I need to access column of second grid ( i need to make a column of second grid as disabled) when i click "Cancel" link button in First Grid. How can this be done?
View 7 RepliesI have "Order" object with Columns Ticket,OTP and CustomerName etc.Intially on DataGrid, I'm binding Ticket only , when user clicks on "Column Chooser" button, another windows appears to pickup CustomerName,OTP columns to add specified column dynamically on Datagrid. Environment : Asp.net ,C# with Object Data source
Public Class Order
{
publc void Order()
{
}
public string Ticket
{
get
{
return this.strTicket;
}
set
{
this.strTicket = value;
}
}
public string OtpNumber
{
get
{
return this.strOtpNumber;
}
set
{
this.strOtpNumber = value;
}
}
public string CustomerName
{
get
{
return this.strCustomer;
}
set
{
this.strCustomer = value;
}
}
}
}
I have a nested datagrid. I want to get header texts of child datagrid, bifore binding process.
Is there a way to do this?
I have a datagridview control that I'm using to display cache data to the end used on a web form. The issue that I'm having is that every time I re-run the application, and the cache data is re-generated... it loads duplicate data that's being displayed to the end user. I can't seem to figure out how to keep this from happening.
What I would like to have happen is that only unique data rows be returned and cached for the end user. Unless there are new data rows on the database that needs to be included in the cache data results...the previous data results should not be duplicated. I've tried to change a few properties on the datagridview control, but nothing seem to keep this from happening.
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I have a datagrid which pulls data from a single database table to display it. However, this database table also contains information on the thumbnail URL for each record, and I would like to display the thumbnails for each record in the 1st column of the datagrid.
At present I have added the following to my datagrid:
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So I presume the main challenge now is to set the Thumbnail.ImageUrl property to the correct file path in the VB.NET code. But how do I do this for each record? I am using a function to retrieve data for the gridview, which is based on the following:
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I am having an issue with a simple databind to a datagrid. What happens is that for some reason, the first character of the data going into the 4th column is getting placed at the end of the data in the third column; but only on the first row. Here is an example of what I mean:
Form ID
Employee No
Associate Name
Start Date
End Date
Form Status
1234
5000187
Stan Marsh1
1/16/2010
11/30/2010
Approved
1234
5000187
Eric Cartman
11/16/2010
11/30/2010
Approved
1234
5000187
Kyle Broflovski
11/16/2010
11/30/2010
Approved
As you can see, in the first row of data, a "1" has been moved from the Start Date column to the Associate Name column. Because this is a databind I don't see how this is even possible. I'm just curious if this is a known issue or just some random fluke. Here is the relevant code:
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check the VB behind code for any syntax errors.Unable to add new rows of data to a database using the DataGrid control.Compilation Error message is located at http://cforedu.com:View snap shot images of each line error at http://cforedu.com/snap.pdfThe VB code behind reads (revision 1.3):
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I have a web application that takes information entered by the user and displays it in a few datagrids, that are located withing a multiview.
In order to enter a row to a datagrid the user enters some information and clicking on a button calls a function that adds the data to an arraylist, which is the source of the datagrid. In addition, every postback the data is binded to the datagrid.
It all works fine in the first time, but from the second row and on it enters only parts of the data and ignores the rest.
I am doing when the form loads up
DataGridViewComboBoxColumn ComboTextCol = new DataGridViewComboBoxColumn();
ComboTextCol.Headertext = "some";
ComboTextCol.DataSource = GetEmployees().Select(e => new { Name = e.LastName + " ," + e.FirstName, ID = e.EmployeeID }).ToList();
ComboTextCol.ValueMember = "ID";
ComboTextCol.DisplayMember = "Name";
datagrid.Columns.Insert(0,ComboTextCol);
I tried this too datagrid.Columns.Add(ComboTextCol). GetEmployees gives employee data I see the column but not the the data...??
I have a DataGrid bound to an ObjectDataSource, as you know once the DataSourceID on DataGrid is set, data binding happen automatically without any coding. But due to requests from end users, I need to prevent the data binding when the page is loaded the first time, i.e. data binding should only happen during PostBack. How do I do that?
View 3 RepliesI have an SP in backend that retreives multiple recordset/DataTable where each recordset/Datatable contains 10 records and 8 columns.
The Count of recordset/Datatable differs based on parameters.
The SP retreives Data in nearly 0.01 seconds.
I have been displaying the records by looping each Datatable and each record in DataGrid Template Control, this way the page loads very slowly.
Can some one please suggest me on how to display/Load the data more efficiently and faster in front end ASP.NET 2.0?
Can I perform some Multithreading to display records from different datatables?
I am familiar with populating a gridview with data. I am able to bind the Data pulled from the database into the gridview
gridview.DataSource = myDataTable;
gridview.Databound.
If I write the following code, teh gridview will no longer show the data
gridview.DataSource = null;
gridview.Databound.
My question is , I want to make the same thing with a user control that contain a gridview. when I use the user control in an aspx page, I am able to populate it with data, but when I try to make this code, the Datasource does not show, instead, I see .DV. So I tried this code but then , I do not see DataSource property instead I see DV (DataView), when I put .DV = null, I get an error message that the object is not in existed. any idea how to clear the user control gridview from its data.
Found this interesting interview question:You need to display the sales data for your division for the past 5 years in a DataGrid on a Web Form. Performance is very important. What would be the best strategy to use in retrieving the data?
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using .NET 2.0 want to format datagrid , i am using DataGrid. i am saving data from textbox to database as formated text. now while retriving data from database i can see html format data i need to format : Example
<B> test my text </B> new test. want to show in dagagrid like test my text new test: and when i click on datagrid i want to see test my text new test this format not styling below code for data grid
<asp:GridView ID = "gvNotes" AllowPaging ="false" PageSize = "5" PagerSettings-Visible = "false" Width = "99%"
CssClass = "Grid" EmptyDataText = "No records found." runat = "server" DataKeyNames = "NOTES_ID"
AutoGenerateColumns = "false" OnRowCommand="gvNotes_RowCommand" OnRowDataBound="gvNotes_RowDataBound">
<EmptyDataRowStyle HorizontalAlign = "Center" Height = "30px" />
<Columns>
<asp:BoundField DataField = "NOTES" HeaderText = "Notes">
<ItemStyle CssClass = "GridRow" HorizontalAlign = "left" Width = "60%" />
<HeaderStyle CssClass = "GridHeader" HorizontalAlign = "left" />
</asp:BoundField>
<asp:BoundField DataField = "DATE" HeaderText = "Note Added Date">
<ItemStyle CssClass = "GridRowPadRight" HorizontalAlign = "Right" Width = "20%" />
<HeaderStyle CssClass = "GridHeader" HorizontalAlign = "Right" />
</asp:BoundField>
<asp:TemplateField HeaderText="Edit">
<ItemStyle HorizontalAlign="Center" Width="5%" CssClass="GridRow" />
<HeaderStyle CssClass="GridHeader" HorizontalAlign="Center" />
<ItemTemplate>
<asp:ImageButton ID="btnEdit" ImageUrl="~/Images/Edit.jpg" ImageAlign="Middle" runat="server"
CommandName="Edt" CommandArgument='<%#((GridViewRow) Container).RowIndex %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Delete">
<ItemStyle HorizontalAlign="Center" Width="5%" CssClass="GridRow" />
<HeaderStyle CssClass="GridHeader" HorizontalAlign="Center" />
<ItemTemplate>
<asp:ImageButton ID="btnDelete" ImageUrl="~/Images/Delete.jpg" runat="server" CommandName="Del"
CommandArgument='<%#((GridViewRow) Container).RowIndex %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
I have a datagrid in aspx page.Inside of datagrid i am using around 15 controls such as Button,dropdownlist and text box
controls.Once the datagrid binds then the events in the aspx page not firing.Issue occured when the number of rows greater than 500.The number of rows less then its works fine.
"Platform i am working on ASP.NET1.1"
Okay, I have developed VB.NET winforms applications and I understand that working with ASP.NET would be similar. However, this seems way complicated then I thought. Basically, i am working on accessing one table data from a database and populating data in a datagrid. I have few text boxes on the display page and if a user clicks on submit button i want a new set of data with new select statement based on user input.
I don't quite understand how the textbox value can be passed on the same page and a new select statement is generated, which then populates the datagrid.
i have loaded a datagrid with some data from access database using sql query. i have to read the data loaded in datagrid view the syntax to read data cell by cell usiing vb code.
View 6 RepliesI have two dropdownlists and one datagrid...I want to bring data from dropdownlists to grid.After selecting items in both the dropdownlists , I want to add the two selected items from dropdownlists in a datagrid row in two diffrent columns.And I want to add next selected data from the two dropdownlists to the second row of grid and so on.
View 5 RepliesI want to have one datagrid use two different data sources, the two datasaet I use have all the same cloumn names, the only difference is that the come form different databases. I wan tto have the data source be chosen by a dropdown list box. Is this possible or do I have to use two datagrid and just make on invisiable as needed.
View 1 RepliesI have a datagrid holding values in it..I have a button below that datagrid(print button)..If i click the print button the datagrid values only should be sent to the printer and the print out must be taken..I have the datagrid in as .aspx page(ASP .NET)
View 3 Replies