I have wired an event to handle delete command for my GridView. But I cannot determine which the record's unique key, in my case stored in DOCIDNO field. All I get is a row index, such as 0, 1, 2 which obviously cannot be used to accurately delete a record from database.
<asp:GridView
ID="gridTimeOff"
runat="server"
HeaderStyle-CssClass="gridHead"
RowStyle-CssClass="gridRow"
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I have a gridview with datakey value
in save button click i want to get the gridview datakey value
Dim _id As Integer For Each row As GridViewRow In Me.gridviewi.Rows Next
Tried this but it doesn't work.
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Retrieving datakey value in gridview?
Lets say for example that I have a book object that looks like this:
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And a Page_Load method that bounds a GridView called "gvBooks" from a generic list of books:
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Now as you can see, I want to have the BookId value that is part of the Dictionary as a DataKey of the gvBooks GridView.
That piece of code of curse returns an Exception:
"DataBinding: 'GridViewTest.Book' does not contain a property with the name 'BookId'."
My question is: Is it possible to have the BookId value as a DataKey of the GridView?
I'm relatively new to the VS environment. I'm using VS2010 Beta 2 with VB. I have a Gridview setup to pull a list of employees. Next to their name I have edit and delete icons. When I leave the icons as ButtonFields, they pass the DataKey value to my code behind perfectly. When I convert the ButtonFields to TemplateFields, they no longer pass the DataKey.
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My gridivew currently has 4 colums with the third being a subject column. I want this colum to have bold text if the datakey 'ReadStatus' is equal to false. I have had success if the column is bound to the gridview but 'ReadStatus' is only a datakey and not bound to the gridiview. My code is below:
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I want to select a row in my GridView based on a known data key value at runtime.
In other words, I have a data key value, 2 for ex., and the primary key value of one of the rows in my GridView is 2. How can select that row? (Without having to go through each row to find which one matches my key, then setting the SelectedIndex.
I have a GridView with a checkbox for the user to select different categories. I am trying to retrieve the CategoryID associated with each row when the user clicks next, however I keep getting an error that tells me the selected index cannot be negative or out of range.
Here is my function
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How do I retrieve the CategoryID of the row as an Integer value?
How to get the DataKey value in RowDataBound event for GridView
View 3 RepliesI have a gridview with a DropDownList (contained in a TemplateField). I have set the OnSelectedIndexChanged event to a function called "ddlAgent_SelectedIndexChanged" This allows me to aquire when a user has changed the value for the dropdownlist. What I need to do is persist this newly selected value to the database for the gridview record. The problem I'm having is how to I get the datakeyNames value for that row? See code below!
TemplateField source
<asp:TemplateField HeaderText="Agent">
<ItemTemplate>
<asp:DropDownList ID="ddlAgent" runat="server" AutoPostBack="False" OnSelectedIndexChanged="ddlAgent_SelectedIndexChanged">
</asp:DropDownList>
</ItemTemplate>
<ItemStyle HorizontalAlign="Center"></ItemStyle>
</asp:TemplateField>
ddlAgent_SelectedIndexChanged
Protected Sub ddlAgent_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)
Dim gvItems As DropDownList = CType(sender, DropDownList)
' Write the selected Agent ID to the Inquiry record.
'Dim ID As Integer = gvMaint.DataKeyNames(e.SelectedIndex).Value ' THIS FAILS BECAUSE
e.SelectedIndex is not part of System.EventArgs
End Sub
I have a gridview table and i need to select one record and insert the Datakey of the selected record to a formview textbox control. I'm completely lost...
View 13 RepliesI have a Gridview which is populated from an ObjectDataSource. Data Source has a control parameter hooked up to the SelectedDataKey value of the GridView. My Gridview has rows which may not have a DataKey. I am receiving an error when a GridView row without a DataKey is selected.
View 5 RepliesI have a GridView. One of its columns contains monetary amounts. Underneath the GridView, I have a SqlDataSource which calculates the sum of this column and displays it in a label which is in a DIV called totalsbox (that I have added runat="server" to).
Obviously, if the GridView is empty, I don't want this label to be visible.
In the Page_Load, I have placed the following code:
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This works fine. When the Page first loads, if the GridView is empty, the entire DIV is hidden; if not, the DIV is visible and the label displays the column SUM. imagine now the GridView DOES have rows, the DIV is visible and the total is displayed properly in the DIV ("£10.00", say).
I have a RowDeleted event handler in the code behind which contains exactly the same code as I put in the Page_Load. As I delete rows, one by one, the sum is recalculated and displayed properly. But, when I delete the final row, I would expect this code to hide the DIV as the GridView is now empty.
This doesn't happen, however, the DIV remains visible and I have, in the label, something like "£ ".
Why is it that the code works in the Page_Load but not in the RowDeleted event handler?
I have a gridview and which contain checkbox field too.If the checkbox is clicked and then delete button click, relevent record is deleted.This delete function is working properly.
problem Even though record is deleted,it does not affected in gridview.Deleted record is still remaining in the gridview.What will be the way that should I follow solve this problem?
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This is Film table in database
ID Daste Preference
1 film 5
2 serial 4
3 serial 1
4 film 2
And bind gridview from this table and ordred by Preference Column I put Linknbutton in gridview that code is:
protected void LinkButton11_Click(object sender, EventArgs e) {
GridViewRow row = (sender as LinkButton).NamingContainer as GridViewRow;
int id = Convert.ToInt32(GridView2.DataKeys[row.RowIndex].Value);
using (SqlConnection conn = General.GetConnection()) {
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Oroblem is in this line:
int id = Convert.ToInt32(GridView2.DataKeys[row.RowIndex].Value);
I want when I click on linkbutton it use Id but here it use Preference data How I can define that according to Id column it go to
Response.Redirect("EditFilm.aspx? &id=" + id);
I am binding SQL data to a GridView. The GridView's DataKeyNames property is set to the SQL column called "utID"
I know that within the SQL results, some of the utID values are NULL. After databinding to the GridView, I need to enumerate through the GridViewRows an read the DataKey values. However, when I try this I get the following error:
No default member found for type 'DBNull'. I am using the code below.
What object types are stored within DataKeys (I thought it was just integers or strings)
How to handle a NULL datakey value to prevent this error occurring?
I don't want to use Try Catch because it's too much of a 'hack'
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I have followed your Nested level gridview and found it working, but i want add a button in the child element(from your example  i will have a btn  in Product grid and it should get contact_id (parent datakey value as well) ),as i  need to update in database.
View 1 Repliesa)i have an gridview, i need to every record show in every rows, but it's show in both column and rows...., how fix this?i use only itemTemplate in this gridview!
b)how i link a field thats show in gridview and pass to a new page(with query string) for show single record....?
(this is like "read more..." link in many news site!!!)
c)in my db is a 'ntext' field,but when that show in Gridview,all enter(Chr13) and whitespace deleted, how fix this?
How can get datakey value of Nested(child) GridView on click on delete button of child grid
View 1 RepliesHow-to-bind-data-to-a-DropDownList-which-is-inside-a-GridView-in-ASPNet.aspx
it is possible, use OnSelectedIndexChanged method of the dropdownlist and take the id value of the row where is the dropdownlist.
<asp:DropDownList ID="ddlCountries" runat="server" onselectedindexchanged="GetId_SelectedIndexChanged">
 c#
protected void GetId_SelectedIndexChanged(object sender, EventArgs e)
{
}
need to have the id of the row where is the dropdownlist, to make a query after.
I have a dropdown list within a details view that allows me to set 1 or many categories to a perticular record(in this case a photo). The select command in this case only displays those catetegories that are not already attached to the selected photo.
all works well and as you select a category and add it to the database the category is removed from the dropdown list and is added to a gridview which shows all categories that photo is stored with.
My Problem is that when i delete the category from the gridview the dropdown list does not delete with said deleted item unless i do a "click in URL bar and press enter" to totally refresh the page.....
how to refresh the dropdown list in the details view after the gridview item has been deleted?
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How to get grid view datakey value in nested grid view in gridview_RowCommand
I have used this code but here it will not detecting grid view name
protected void gvDetails_RowCommand(object sender, GridViewCommandEventArgs e) {
string tempid = "";
switch (e.CommandName) {
case "cmdbtn":
int currentRowIndex = Convert.ToInt32(e.CommandArgument);
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I have used this code but here it will not detecting grid view name...
A GridView from EntityDataSource has an "Edit" link that takes the DataKey id (e.g., DataKeyNames = "PersonID", <asp:HyperLinkField
View 2 RepliesI am trying to delete a row in the GridView with an ImageButton Link. By clicking the button, the GridView row is set with a backColor = "Red" and with delete confirmation window. On Cancel, the background color is removed, but When I confirm the deletion, the row is not deleted. I use the following code:
<asp:TemplateField HeaderText="Delete?">
<ItemTemplate>
<asp:ImageButton ID="deleteImageLink" runat="Server" ImageUrl="~/images/Delete.gif" CommandName="Delete">
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The bellow code deletes the row, but the without setting the background color on the row prior
deletion:Â ImageButton deleteButton = (ImageButton)e.Row.FindControl("deleteImageLink");
deleteButton.OnClientClick = "if (confirm('Are you sure you want to delete this user account?') == false) return false;";
I have a gridview with a template filed which contains an embedded gridview, which may or may not contain any records. I want to be able to make the master gridview row a different color for those rows whose child gridview has records. My plan is to add a sqldatasource to the page that targets the child gridview table and during the master gridview RowDataBound event I would check to see if there are any records and apply the formatting accordingly.
View 3 Replies