Web Forms :: Data Bind Is Not Working?
Jun 25, 2010
protected void ddOne_SelectedIndexChanged(object sender, EventArgs e) { PopulateType(); } private void PopulateType() { DataSet dstype = new DataSet(); //Assign DataSet by stored procedure that is working correctly and //DataSet has values that I want to ddType.DataSource = dstype; ddType.DataTextField = "Name"; ddType.DataValueField = "ID"; //I have watching values in visual studio.net and its working perfect //using QuickWatch and breakpoints ddType.DataBind(); }I have to give data source and bind a dropdownList with the event of another dropdownlist ....At code it is working good but At webpage, It is not showing the DropDownList.
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Similar Messages:
Aug 26, 2012
I have the following Repeater, I need to bind multiple querystring parameter in HREF
<li class="current">
<a href="house.aspx?H_name=all"></a>
<ul>
<asp:Repeater ID="rptMenu" runat="server">
<ItemTemplate>
[code]...
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Aug 27, 2010
i am using ajaxtoolkit:combobox and i tried to bind data to this control in code behind file.but it is taking 3 to 4 mints to bind data and display the page. I am providing my aspx code and code behind code here
[Code]....
Code behind code:
[Code]....
GetPrograms() method will return almost 6000 records. to load the control it is taking almost 4 minuts..
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Mar 14, 2010
Isn't the Bind attribute, preferable the Exclude parameter, define any properties that will be excluded from any form update? If so, why does the ModelState is not valid when I do this?
[code]...
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Jan 3, 2010
I've got a .aspx and in it an .ascx. In the .ascx I have a server control.
The .aspx has a list of items in a cart The .ascx has a list of some cross-sell items (fed from a custom server control) that the customer can add to the cart if desired both the list of items in cart and list of cross sell items are driven by a repeater and bound on page load. So the .aspx calls a method that rebinds the cart items on page load. And the .ascx calls a method in its page load that rebinds the cross sell items in that custom control (.cs) that is in my .ascx.
The problem I have is, when the user clicks a "add to cart" button in the repeater inside my custom control, the page refreshes and what should happen is the cart items in the .aspx AND the list of cross sells should refrsh showing that the cross sell item was moved to the cart. But even though when I debug and I see the list being rebound with the corret # of items after the move, the page still shows the old state. I have to refresh the page manually again to get it to work.
I guess I need to check for Page.IsPostback? but even if I don't check that..at the least both lists should be refreshing regardless cause I have it in my page load. So even if it's a postback, and I'm not checking for that the lists should show the new state because I'm not even checking for postback anyway. So checking for postaback I don't think is the issue here cause i want the lists to rebind and re-update on any page load....initial or if it's a postback...it doesn't matter. Reload every time. But it doesn't seem to be doing this even though I clearly see the revbind of the lists having the right count (one less on the cross sell and one additional to the cart as it was added after the user clicked the button).
Here's the sequence of events:
User is on their cart page User sees a list of cart items that they have added to their cart already (this list is bound in the Cart.aspx and rebound on every page load)User sees a list of possible cross sell items they can add to their cart somewhere on the page. This list is a custom control found in my .ascx and that .ascx is obviously in my .aspx.
The custom control is just a repeater that lists out the cross sell itemsUser clicks one of the "Add to cart" buttons on one of the cross sells Page refreshes. In the page load of the .aspx AND the .ascx, I am going out to the DB and rebinding both those lists based on the new state...that is, the new lists after the item was added to the cart which means that now the cart items should have one more added to the list and it does...I clearly see that the new list has one more.
The page comes back after the refresh but I don't see the lists reflecting the new state...I don't see the new item in the cart items list and the added cross sell removed from the cross sell list even though again both lists when I debug are showing correct set of records reflecting the new state.
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Oct 13, 2013
I have connected listview by using datasourceid that means by using "sqldatasource1" now i want to change value of listview at run time according to search so for that i am using datasource at codebehind. but it give an error
"listview have already bind with datasourceid you can not bind it with datasource"
what should i do for solving my requirement.
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Sep 6, 2010
I have a bunch of controls like the following in the EditItemTemplate of a ListView, with LINQDataSource:
[Code]....
I'm curious to know why the database won't update on the click of the Update button:
[Code]....
According to all I've read, the above code should be sufficient. Since CommandName is set to Update, it would seem that no code-behind is necessary.
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Apr 26, 2010
I want to export the grid data to excel then write the following code but the following lines of code are working at firefox3 but not at ie8(no response).
System.Web.HttpContext.Current.Response.Clear();
System.Web.HttpContext.Current.Response.AddHeader("Content-disposition", "attachment;filename=ProjectTimeSheet.xls");
System.Web.HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
string excelFile = "";
excelFile = ConvertToExcel(PrepareGridViewForExport()); //generate formated table for excel
System.Web.HttpContext.Current.Response.Write(excelFile);
System.Web.HttpContext.Current.Response.End();
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Jan 12, 2010
.I have a search page where I would search for an item and it would dispaly the results in a gridview...
I have allowed paging and set page size to 10..now I can see the 10 results in the first page and also see the page numbers at the bottom of gridview. But now when i click on the page 2, the method gridview_pageindexchanging is triggered but the result set is not dispalyed. My code is as below..
[code]....
i understand that the data is not binding in the GridView1_PageIndexChanging method..I do not know how can I make data bind..
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Jan 22, 2010
i have a text box that i bind to my model data and it works fine. however when i submit my form in some cases i want to change the value that in the text box so some value i pull from the db. when i do this, it only works if the form was not submitted. is there something i am not aware of when it comes to rebinding a text box from the model in cases when the form was submited, instead of reloading the same value that the user entered into the text box?
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Dec 10, 2010
Mr requirement is i am uploading a .txt file and read that .txt file and bind that data to ASP.NET Gridview control. My .txt file is look like below:
% Compressor type: GT12 C224(38) 55 Trim 0.38 A/R
% Turbine type: GT12 T202(35.5) 72 Trim 0.39 A/R
% Initial data file name:20050669-02.cdt
% Polar inertia: [kg.m2]
% Comment:DATA REDUCTION CODE REV 2.04 RELEASE 03-OCT-2004 (REFERENCE: REPORT 99-0145. REPORT 03-0901. TI-056)
% P reference: 100000Pa - T reference: 298 K
% NC WC PRC ETAC
% RPM KG/S T-T ----
115030.5714 0.0170 1.3398 0.5698
115030.5714 0.0239 1.3209 0.6155
115030.5714 0.0291 1.3020 0.6282
115030.5714 0.0339 1.2822 0.6377
115030.5714 0.0380 1.2576 0.6209
115030.5714 0.0416 1.2311 0.5955
134956.4286 0.0405 1.4045 0.6852
How to read this file and bind data to gridview control.
Right now i am using the following code but it stores whole data in a single column and a single row but i need it in four columns named NC, WC, PRC,ETAC and it's values in respected columns.
Code:
protected void Button1_Click(object sender, EventArgs e)
{
String ext = System.IO.Path.GetExtension(FileUpload1.FileName).ToUpper();
if (ext == ".TXT")
{
String content = System.Text.Encoding.ASCII.GetString(FileUpload1.FileBytes);
String[] ar = content.Split(';');
GridView1.DataSource = ar;
GridView1.DataBind();
}
}
how to get data in four columns in Gridview as a tabular format. I am using technologies Visual Studio 2005, ASP.NET 2.0,C#.NET 2.0 and Windows Xp Operating system.
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Dec 6, 2010
I have two tables
Employee Table : ( EmployeeID,EmployeeName,... Etc )
Bonus Table : ( BonusID,EmployeeID,BonusDate,Bonus Reason,... Etc )
I wanted to list the bonuses in a gridview, so i made a query to return list of bonus records and my data access object returns the result set as Bonus business object ( generic collections of bonus BO ). i have bind my gridview with the bonus collection.
now my problem is that collection has the property "EmployeeID" and it will be displayed but instead of showing EmployeeID, i wanted to show Employee Name in that grid. I have a gridview where i want to list the bonus records ( bonus ID, bonus date, bonus description, employee ID) ,
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Jan 5, 2011
I want to bind gridview with datatable in this dt ihave 4 columns , dt
Id Name isdelete value
1 xyz true
2 uio false
3 bbb true
4 ccc false
this is gridview
[Code]....
but i want not bind those rows whose isdelete coumn value is false and i want to show 4 th column as textbox and user will enter some text or number and if he click save button outside of gridview one record shld save in database
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Nov 30, 2010
wanted to bind all the files of a directory named "ABC" to a data grid and show them in a .aspx file as downloadable contents. When the user clicks a certain file link, here, the download starts immediately.
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Jun 18, 2010
i am facing a minor problem but can't find out its syntaxi have listview, and inside the template i have 2 labels, in design time i bind 1 label to one column thatis 'type' and depending upon this type i want to bind other labels to different columnsif type is question than 2 label will have to show data of question columnif type is job than 2 label will have to show data of job, so on........how to accomplish this,in databinding event handler i can check the value of typebut i want to know the syntax of binding 2 label in run time, with different fields using EVAL
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Feb 7, 2011
sample SQL data:
table1:
eid ename
1 vijay
2 shankar
table 2:
id eid sal
1 1 4000
2 1 3000
3 2 2000
i want to bind the below data format in repeater.
vijay
4000
3000
shankar
2000
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May 7, 2010
I need to display foders n files information(type,size,date modified etc) of a particular directory in a gridview.I need to make the folders as links and files as labels before binding the data.
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Jan 12, 2011
I want to bind two column on single level in GridView
I m using this code
<asp:Label ID="Label1" runat="server" Text='<%# Eval("lChannelName")+ " " +Eval("lTransformData") %>' >
</asp:Label>
But i want to bind First column at Left hand side and second column from right hand side
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Sep 27, 2010
i wanted to retrieve things from the data base and perform mathmatical operations on it then post it to the user, so i was told to use the bullited list and bind it to the object dataSource
how to perform such thing??
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Dec 29, 2010
datalist not bind when i click asign classs button then enter some value and save.. datalist is bind when i click free class button then enter some value and save ... data list is not bind and show show that record...but it will save in database
why data list is not bind in free class button?
i bind through datalist.databind()
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Feb 16, 2010
i m unable to bind data inside checkbox list. this is my code
protected void dlBreeds_ItemDataBound(object sender, DataListItemEventArgs e)
{
try
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
CheckBoxList cbl = e.Item.FindControl("cblAnimaltype") as CheckBoxList;
if (cbl != null)
{
cbl.DataTextField = DataBinder.Eval(e.Item.DataItem, "BGName").ToString();
cbl.DataValueField = DataBinder.Eval(e.Item.DataItem, "ID").ToString();
}
}
}
catch (Exception ex)
{
pnlStatus.Visible = true;
lblMessage.Text = ex.Message.ToString();
}
}
protected void BindAnimals()
{
//*********************************************************************************
// Purpose : To bind breeds in listbox
// Inputs : Nothing
// Returns : Nothing
//*********************************************************************************
DataSet ds = new DataSet();
try
{
ds = InvertebrateProviders.GetBreedsName_Invertebrate(1);
if (ds.IsInitialized)
{
DataView dv = ds.Tables[0].DefaultView;
dv.RowFilter = "ID<>0";
dlBreeds.DataSource = dv;
dlBreeds.DataBind();
}
}
catch(Exception ex)
{
pnlStatus.Visible = true;
lblMessage.Text = ex.Message.ToString();
}
}
<asp:DataList id="dlBreeds" runat="server" DataKeyField="BGName" OnItemDataBound="dlBreeds_ItemDataBound" RepeatDirection="Vertical">
<ItemTemplate>
<asp:Panel ID="pnbBreed" BorderColor="#7f9db9" Height="129px" Width="220px" ScrollBars="Vertical" BorderWidth="1px"
BorderStyle="solid" runat="server" Visible="true">
<asp:CheckBoxList ID="cblAnimaltype" DataTextField='<%#Eval("BGName") %>' DataValueField='<%#Eval("ID") %>' AutoPostBack="True" runat="server" Height="129px" CellPadding="0" CellSpacing="0"
OnSelectedIndexChanged="cblAnimaltype_SelectedIndexChanged" Width="200px" >
</asp:CheckBoxList></asp:Panel>
<asp:CheckBoxList ID="cblBreeds" Height="90px" Width="200px" runat="server" ></asp:CheckBoxList>
</ItemTemplate>
</asp:DataList>
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Dec 8, 2010
I would like to bind a multi domensional arry to a data control (at the moment any data control will do - I just want to present the data).
suppose I have the following array:
string[,] strArr = new string[5,3];
strArr[0,0] = "0,0";
strArr[0, 1] = "0,1";
strArr[0, 2] = "0,2";
strArr[1, 0] = "1,0";
strArr[1, 1] = "1,1";
strArr[1, 2] = "1,2";
strArr[2, 0] = "2,0";
strArr[2, 1] = "2,1";
strArr[2, 2] = "2,2";
strArr[3, 0] = "3,0";
strArr[3, 1] = "3,1";
strArr[3, 2] = "3,2";
strArr[4, 0] = "4,0";
strArr[4, 1] = "4,1";
strArr[4, 2] = "4,2";
can you provide an example of how to dind this array to any of the standard data controls?
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Jan 8, 2010
i want to bind data to html page using datalist control ...
or is there another way to bind data to simple html control ....where i am feching data from sql server ...
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Jul 23, 2010
I have a mySQL datasource pulling back data from a query and populating a formview in edit item mode ( I only use this mode ). All is good. Business logic is such that some dates can be null. When I was putting the null or "" dates into a text box there was no problem, some users had problems with dates so I used the datepicker lite control, now the null or "" dates cause a data type conversion error stating that an empty sitrng "" cannot be cast to type date. It basically barfs here
<%# Bind("OrderDate", "{0:dddd d MMMM}") %>
This is obviously in the asp source portion of the code and there is no code in the classic VB section fo the page, it is all done by drag and drop controls and databinding.How can I fix this error and yet still allow users to put in a date, when applicable, and save the update with the new date added. eg I dont want to take out the databind if I can no longer save that field back to the db.
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Aug 27, 2010
on which all conditions we use dataset and datatable to bind data to a gridview?
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