after my grid view updates a record I would like to run some code, I have tried to use SelectedDataKey.Value.ToString() to get the datakey. However it is null, the record updates so the value must be stored somehow?
View 1 RepliesWhat seems to happen is 'GridView1_RowUpdating' gets fired, at this point newEnglish, newFrench, and newGerman all have the new values as they are passed into 'Logic.Update'. Then the update functions updates correctly, but once the 'GridView1_RowUpdating' sub ends, it seems to call Logic.Update another time, and this is where the new values get lost for French and German (datakeys) but not English.
Protected Sub GridView1_RowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles GridView1.RowUpdating
Dim newEnglish As String
Dim newFrench As String
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I have one Gridview like this.
<asp:GridView runat="server" ID="gvMRLSearch" Width="100%" AutoGenerateColumns="false"
CssClass="datagrid" DataKeyNames="MRLID" >
<Columns>
<asp:BoundField DataField="MRLID" HeaderText="MRL ID" Visible="false" />
<asp:BoundField DataField="MRLCreateDate" HeaderText="MRL Create Date" />
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But I get only the first row MRLID only, if selects the second again I get the first row MRLID.
I have a Gridview where the user can edit a row when he click on "Edit" (this is called update mode i thinck?).
When the editing is done, the user clicks on "Update" and the changes are written into the database. Additionally i set a "ChangeMarker" in the database that the data record has been changed by the user.
I identify the row in the database i want to update with the SelectedDataKey in the Gridview:
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In the first line where I dim EdittedRow i got an error: "Object reference is not set to an instance object". I dont understand this error message.
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 RepliesI have a GridView with an associated DataKey, which is the item ID. How do I retrieve that value inside the RowCommand event?
This seems to work, but I don't like the cast to LinkButton (what if some other command is firing the event?), and I'm not too confident about the NamingContainer bit.
LinkButton lb = (LinkButton)e.CommandSource;
GridViewRow gvr = (GridViewRow)lb.NamingContainer;
int id = (int)grid.DataKeys[gvr.RowIndex].Value;
I'm aware that I could instead pass that ID as the CommandArgument, but I chose to use DataKey to give me more flexibility.
I'm also aware that it's possible to use a hidden field for the ID, but I consider that a hack that I don't want to use.
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 have a gridview like this :
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I have done this before "n" number of times but I am not able to get it working this time. The trouble is that when the call for the Select Method of the formview goes to the relevant function - "GetCustomerByCusnum" I have a null value in its parameter "cusnum".
I know that I can write a selecting event and using CommandArgument, parse the value of the selected row and pass it into the Select method as a value but I dont want that solution. I know it works without the "Selecting" method but I cant recall how.
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
GridView
<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
AllowSorting="True" PagerSettings-Position="TopAndBottom"
PagerSettings-Mode="Numeric" PageSize="40" CellPadding="4" DataSourceID="dsEquipmentGridView"
ForeColor="#333333" GridLines="Horizontal" Style="font-size: x-small" AutoGenerateColumns="False"
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For the first page loaded, it shows the correct DataKey value if I click on the command field.
However if I change to the next page of results, upon selecting a record the corresponding value is incorrect. It seems to keep the previous page information. How do I overcome this?
EDIT:
In the GridView1_SelectedIndexChanged method, I used the following:
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I am unable to get the correct value after paging.
I have a situation where I needed to add a row to my gridview. So say I have rows 3, 4 and 5.
My Datakeys are defined as "ID, CostingID". I did that so I can reference the two ID values I need when saving records.
here is the code in my RowDataBound event.
Basically if it is a datarow, I'm adding the value dataitems so I can get a sub total in the footer row.
Then, I have a boolean field called isDisbursement. So I sort my data by that field. So all records with the disbursement flag as true will display first.
Then as soon as the disbursement flag hits false I add a row to display the Total of the disbursement records value field.
All this works. My problem is, because I added a row at index 4 it inherits the datakey of the row that was at index 4 before. So when I'm looping through the grid rows to save the values I'm having a problem. I've attached an image so you will understand better what I'm trying to achieve. The "Total Disbursements" is the row I added. But it gets the following rows datakey because it is now at index 4.
when I do this, as soon as I reach row 4, although it doesn't have a CostingID it gets the CostingID of row 5 that used to be row 4:
Code:
Dim CostingID As Long = Convert.ToInt64(Me.grvCostings.DataKeys(row.RowIndex).Values("CostingID").ToString)
Dim strValue As String = CType(row.FindControl("txtValue"), TextBox).Text
Code:
If e.Row.RowType = DataControlRowType.DataRow Then
If Not IsDBNull(DataBinder.Eval(e.Row.DataItem, "value")) Then
_SubTotal += Convert.ToDecimal(DataBinder.Eval(e.Row.DataItem, _
"value"))
End If
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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?
How can get datakey value of Nested(child) GridView on click on delete button of child grid
View 1 RepliesI'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?
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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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 need to reach DataKey columns of a GridView on the client side by a javaScript function.
As they they are at least visually disabled on the UI I wonder if I can still reach them on client?
How-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 question : [URL] .....
Let say below the Employee Name, there's a GRIDVIEW, and that gridview contains Number of Leaves.
So when I click the number of leaves it will pop up.
So my question is how can I get the value of leaves and ALERT that number using jquery.
In the application I am working on there is a Gridview with a select and on clicking the select we get the value of the DataKeyNames.
Basically we have OnSelectedIndexChanged="GridIndexChanged" in the Gridview property.
Now the problem is that I want to add a ButtonField with a Commandname, so that I can call a different method. In the OnSelectedIndexChanged it's simple to get that value by doingGrivView1.SelectedDataKey.value, But how can I get the value of SelectedDataKey in the Button Click?
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