Forms Data Controls :: Gridview : Accessing Data?
Jul 15, 2010
I have a Gridview on my page and I have addedd some checkboxes to it using a template, I have some code that cycles through each row of the Gridview and checks if the checkboxes are checked, but I don't know how to access the data in the Gridview, the code I have so far is:
Protected Sub cmdGenerate_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdGenerate.Click
For Each row In GridView1.Rows
Dim cb As CheckBox = row.FindControl("chkSelUser") [code].....
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Similar Messages:
Feb 10, 2010
I have GridView control with a checkbox in one of the columns. When I click a button to submit, I want to see if the checkbox is selected, but when I do, it only gets "Yes" for Label but false fo Checked. I know I am accessing the column because I get the Label. Wha tam I missing?
<asp:TemplateField HeaderText="OverRide">
<ItemTemplate>
<asp:CheckBox ID="OverRide" runat="server" Text="Yes" />
</ItemTemplate>
</asp:TemplateField>
//Code Behind
//Where i = the row
CheckBox cb2 = ( CheckBox )GridView2.Rows[j].Cells[7].FindControl("OverRide");
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Jan 11, 2010
From what I understand within the Gridview Object you can have many datakeynames.
I have the field like this DataKeyNames = "id1, id2"
However, i don't know how to access the DataKeyNames individualy. For example. How do you access the first ID for the for a given row or the 2nd ID for a given row????
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Apr 20, 2010
I currentlly am trying to get a bit value from a specific cell, i can get a text value from text cell but i cant seem to fiqure out how to access the bit value. This is on a dgvRowCommand event so im using datakeys to access the row and a column index for the coloumn like so.
lblFolderRead.Text = dgvCollabFolder.Rows[currentIndex].Cells[1].Text;
This works if im trying to get a text value but obviously a bit value isnt text and thus does not return anything, How would i access a bit value in the manner above, or if it is not possible that way what other alterntives are there?
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Jun 3, 2010
Accessing GridView Element of specific row?
GridView1.DataSource = newDs;
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Aug 30, 2010
I have taken checkbox inside gridview. And also one linkbutton. When i click on linkbutton to check whether this checkbox is checked or not.
I have some code snippest.
[Code]....
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Jul 12, 2010
I have a Gridview X in which there are 6 columns(5 template columns that are text boxes and 1 bound field). The user has the option of changing the value in the text boxes annd saving them. There is one more GridView Y that displays DB values(all 6 columns are bound fields). Initially X will show the values that being shown in Y, and when user changes the values in Y,he should be able to save it. If we are trying this using OnTextChanged event of asp:Textbox, there is a postback everytime the user makes a change in any of the textboxes. Instead i want it such a way that all the changed values should get concatenated together and should be sent to the DB.
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Mar 5, 2011
In a page, there is a lable called lblTotal and a gridview with 3 columns; Name, Percentage and Amount.
Name and Percent are values that come from a database. Next I need the caluclate the Amount field. The Amount field should be set by taking the Percentage column value in each row, against the value in lblTotal and displayed in the Amount column
So for example
If the value in lblTotal is £200 and the dataset in my gridview looks like this...
Name......Percent......Amount
John......20%..........
Dave......60%..........
Mark......20%..........
Then the result would be this
Name......Percent......Amount
John......20%..........£40
Dave......60%..........£120
Mark......20%..........£40
So I guess I would need to do this using OnRowCreated and do a find control maybe?
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Oct 2, 2010
In my application Iam using GridView, in this there are fields (Quantity, Price, Amount) the user can enter Quantity Field value which is a template field (textbox). Iam calculating Amount(Quantity * Price) using Javascript and assigning to the Amount Column cells as below
Gridviewcell.innerText=Quanity * price.
and when user clicks on the Save button I want to add these details of Gridview to the database.
when I try to access the values of the gridview using below code
For i=0 to GridView.rows.count-1
GridView.Rows(i).Cells(2).toString ( for Example)
Next i
It is not displaying the changed value instead it is displaying the default value before calculating the amount.
Before implementing the Javascript part, I had done this in the code behind and it was working fine... Now I just dont want the page to get load so I used javascript.
able to access the value of Gridview cells which are assigned using Javascript.
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Jun 27, 2010
I have the following html in my gridview in an item template :
<a
href="<%#Container.DataItem("ReciprocalURL")%>"
target="_blank"
title='<%#Container.DataItem("ReciprocalURL")%>'
id="recip">
So I thought that you could use id="name" and access this just like an ASP control such as <ASP:Checkbox
or <ASP:Label etc. My code continues to caugh and state object not set to an instance of an object when I uncheck my checkbox
Line 741: ElseIf Not Me.CheckBox1.Checked Then
Line 742: Dim row As GridViewRow = gvLink.SelectedRow
Line 743: Dim recip As HtmlAnchor = TryCast(row.FindControl("recip"), HtmlAnchor)
Line 744: Response.Write(recip)
Line 745:
[Code]....
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Oct 11, 2010
I have four columns in gridview. EmpId,EmpName,EmpSal,EmpDept.
I want to display the complete information on another page,for this am sending empId to other page through RowCommand.
Now I dont want to display my EmpId Column in GridView but I want to access it .
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Oct 12, 2010
I have a gridview which has autogenerate Columns Property "TRUE", and i'm dynamically binding this gridview with columns with sql database dataset. there is no data in sql but i am successful in showing blank gridview on form, now i want textboxes in gridview attached with each column, so i wrote code in RowDataBound which generates textbox automatically and assigns ID to each textbox, nw i want to insert that data from textbox to database but i'm not getting text which is entered in those textboxes, as i am accessing that textboxes using findcontrol and passing the id like gridview1_ctl03_text0. but i''m not getting any value from textbox?
In short i want to access auto generated textbox (with out any id predefined ) values from footer of gridview
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May 17, 2010
I've been searching all day for a solution to this, but nothing has worked.
Here's my scenario: I'm binding the gridview to a datatable. One of the columns is a textbox that will accept user input.
When a "submit" button is clicked, I need to loop through all the rows, get the textbox's text, and add them all together. Simple, right?
I've tried the following (this is on the "submit" button's click event):
[Code]....
The itemtemplate looks like this:
[Code]....
The txtDays.Text property is ALWAYS empty. UNLESS I assign it a value w/in the control. But then it's ALWAYS that value. I need to get the value of what the user enters.
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Feb 1, 2010
I am using a list of objects as a datasource and passing the object into a user control. I use the code outlined below
[code]...
When I try to access the object this way, it's null.
Funny thing, I can access the user control and all the control data in the user control, but the object (both in the gridview and passed to the user control) are null.
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Dec 15, 2010
I have a GridView (it could just as easily be a ListView if the latter is easier).
I have a Button completely outside of the GridView.
I want to access the cell values in the GridView from the Click event handler of the Button.
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Nov 19, 2010
Iam using a radio button in a Gridview. I want to check whether it is checked or not. If it is checked i want to pass one value or if it is unchecked i want to pass another value. But even when i checked the radio button, it is still showing unchecked in the Debugger. How to check whether it is checked or not. Following is the code iam using:
[Code]....
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May 28, 2010
Is there a way to access the updated text property of a TextBox which is inside a GridView cell when a Wizard controls next or previous buttons are clicked? I have a requirement to not use the edit and/or update buttons on the GridView row. Therefore, I am trying to figure out a way of grabbing the updated values of each TextBox of the GridView on the PostBack. Furthermore, these controls (i.e. Wizard and GridView) are within an AJAX UserControl.
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Dec 30, 2010
I am trying to grab the UID of each row on botton click. However in my code behind I am only able to get the first row.
[Code]....
I am brand new to programing and to ASP.net and I have a feeling I am really close to getting this.
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Nov 25, 2010
I have a gridview control.
Below is the code...
<asp:GridView ID="gvEdit" EmptyDataText="No data found" runat="server" BackColor="White"
BorderColor="#999999" BorderStyle="Solid" BorderWidth="1px"
CellPadding="3" CssClass="Base"
ForeColor="Black" PageSize="15" AllowPaging="false"
[Code].....
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Apr 22, 2010
I have a repeater that dynamically generates the sum of integers upon a button click (a random number gets stored in an sql database). The sum works fine and I get the appropriate output, however I would like to grab the sum and put it back into my C# code so that I can perform operations with it (it's the accumalated score of a game of blackjack so want to check if they are bust etc.) Here is my code:
<asp:Repeater ID="Repeater1" runat="server" DataSourceID="SqlDataSource1" >
<ItemTemplate>
<label runat="server" > <%# DataBinder.Eval(Container.DataItem,"a") %> </label>
</ItemTemplate>
</asp:Repeater>
How do i grab the DataItem "a" and put it back into my code?
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Jun 7, 2010
Am using datalist to create a kinsd of message board, in the back end am having two tables one for the parent comment , and other for the child comments
The data source is extracted by LINQ to SQL with the load option , so I get everthing when I debug on the code behind , and I can see all the fields each parent comment and the child comments.
the problem is with binding the data on the disply for example all the parent table fildes can be rendred without any problems:
<%# DataBinder.Eval(Container.DataItem, "comment1Parent") %>; "showing me the orginal post"
Problem here:
<%# DataBinder.Eval(Container.DataItem, "Childcomment") %> is not rendred and I got this error msg:
DataBinding: 'DataAccessLayer.Comment' does not contain a property with the name 'childComment'.
In the debug I navigate to the childComment and this is its HTML visualisar:
new System.Linq.SystemCore_EnumerableDebugView<DataAccessLayer.Comment>(((ASP.usercontrols_comments_ascx)this).Comments)).Items[0]._comments_Replies.entities.items[0].childComment
I tried
<%# DataBinder.Eval(Container.DataItem, "_comments_Replies.childcomment")
Same as above error came to me.
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May 30, 2013
I have this part in the Gridview.
<asp:TemplateField HeaderText="Student">
<ItemTemplate>
<asp:DropDownList ID="ddl" OnSelectedIndexChanged="ddl_IndexChanged" runat="server">
</asp:DropDownList>
[Code]....
After the change, when it is to bind data, I get this Exception message. Why?Object reference not set to an instance of an object.
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Oct 25, 2010
I have a GridView like this
<asp:GridView ID="gv_FilesList" runat="server" AutoGenerateColumns="false" onrowcommand="gv_FilesList_RowCommand">
<Columns>
<asp:BoundField DataField="f_Id" Visible="false" HeaderText="File Name" />
</Columns>
<Columns>
<asp:BoundField DataField="f_Name" HeaderText="File Name" />
</Columns>
<Columns>
<asp:ButtonField ButtonType="Link" Text="Download" CommandName="DownloadFile" HeaderText="Download" />
</Columns>
</asp:GridView>
Now when I click on the download Button, how can I get the corresponding f_Id in order to get the related data from Database.
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Sep 10, 2010
I would like to ask if it is possible to access data on a master FormView from a nested detail FormView.
I have a main form (master) with several tabs (detail) and would like to display a label with text from main form that is hidden by the tab at the moment of editting. My asp page looks like this.
[Code]....
Is it possible to get the value of the label CompanyTextLabel from CompanyTextBox using just ASP.NET expressions or something similar without writing c# code in .cs file?
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Aug 4, 2010
I am using a from view for data entry. I need to verify that a check box is true or false after editing a record.
I have been accessing label text using the following|
CType(FormView1.FindControl("RespDeptLabel"), Label).Text
How can I access the state of a checkbox in the form view to determine if it is true or false
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