i have a gridview which is inside an update panel. when i click "cance" after the edit, nothing happens. When i debug it does go into my gvWorkhours_RowCommand function and inside the cancel if, but nothing happens on screen (the edit fields are all still visible)
here is what i have:
<asp:GridView ID="gvWorkhours" runat="server" AutoGenerateColumns="false" CssClass="GridViewStyle" OnRowEditing="gvWorkhours_RowEditing"
OnRowCommand="gvWorkhours_RowCommand" >
<EmptyDataTemplate>
no data returned
</EmptyDataTemplate>
<Columns>
<asp:commandfield buttontype="Link" showeditbutton="true" edittext="Edit" />
<asp:TemplateField HeaderText="Organization">
<ItemTemplate>
<%# Eval("org.orgCode").ToString() + "- " + Eval("org.orgSubCode").ToString()%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Year-Qtr">
<ItemTemplate>
<%# Eval("year").ToString() + "- " + Eval("qtr").ToString()%>
</ItemTemplate>
</asp:TemplateField>
.......
protected void gvWorkhours_RowEditing(Object sender, GridViewEditEventArgs e)
{
populateGrid(); //pulls from the Db and binds to the grid
gvWorkhours.EditIndex = e.NewEditIndex; //This is the selected row to edit
gvWorkhours.DataBind(); //Make the edit Template show up
}
protected void gvWorkhours_RowCommand(Object sender, GridViewCommandEventArgs e)
{
// If multiple buttons are used in a GridView control, use the
// CommandName property to determine which button was clicked.
if (e.CommandName == "Cancel")
{
gvWorkhours.EditIndex = -1;
populateGrid();
}
}
private void populateGrid()
{
//getting all variables for update here.
Workhours wh = new Workhours(selectedItem, year, qtr);
gvWorkhours.DataSource = wh.exposures;
gvWorkhours.DataBind();
}
catch (Exception ex)
{
lblMessage.Text = ex.Message;
// throw(ex);
}
}
what am i missing here?
You don't have the UpdatePanel shown in your example, so I don't know how you have it set up, but if you have the UpdateMode set to Conditional, you probably need to manually call the Update method on the update panel:
if (e.CommandName == "Cancel")
{
gvWorkhours.EditIndex = -1;
populateGrid();
UpdatePanel1.Update(); // whatever the name of the UpdatePanel is
}
try to give other word than cancel like "CancelRecord" and then try with it
Yes it's an old question, but no answer.
Cancel needs to be in a RowCancelEdit method ... seems 'Cancel' is a protected word in this scenario
protected void gvResults_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView gv = (GridView)sender;
gv.EditIndex = -1;
BindGrid2();
}
Related
I have a gridview which displays a data from the database. In one of the tables in this database have a column to store details about attanchment file. If the attachment is available that column value will set as "YES". Otherwise it will set as "NO". What I want to do is, show a link to view the attachment. But if cell value of the column is "NO" (when there is no attachment) the link must be hidden.
Note : I know how to view a file. Here what Im expecting is to hide the link in the cell which doesn't have an attachment.
This is what I have done upto now.
if (ds.Tables[0].Rows.Count > 0)
{
grdSo.DataSource = ds;
grdSo.DataBind();
for(int i=0; i <ds.Tables[0].Rows.Count; i++)
{
if (ds.Tables[0].Rows[i][6].Equals("NO"))
{
grdSo.Rows[i].Cells[6].Visible = false;
}
else
{
grdSo.Rows[i].Cells[6].Visible = true;
}
}
}
I could hide the cell using this code. But unfortunately this hides the lines of the cell too. How can I avoid it happening?
One of the ways to do this is to use server side control like LinkButton to view the link that you want to show and set the visibility of the control as per your requirement in the OnRowDataBound event of the gridview.
Below is the code to show/hide LinkButton on OnRowDataBound event.
protected void gridId_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
DataSourceClass varData = (DataSourceClass)e.Row.DataItem;
// check if your data have flag to show the link
if(varData.show)
((LinkButton)e.Row.FindControl("linkbuttonId")).Visible = true;
else
((LinkButton)e.Row.FindControl("linkbuttonId")).Visible = false;
}
}
ASPX Code :
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnRowDataBound="GridView1_RowDataBound">
<Columns>
<asp:BoundField Visible="false" DataField="id" />
<asp:TemplateField HeaderText="Has Attachment">
<ItemTemplate>
<asp:Label ID="lblAtt" runat="server" Text='<%#Eval("HasAtt") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="View Attachment">
<ItemTemplate>
<asp:LinkButton ID="lbtnAtt" runat="server" OnClick="lbtnAtt_Click" Visible="false">View</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
CS Code :
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
this.BindGrid();
}
}
private void BindGrid()
{
//Here you write databind logic
// Datasource table of GridView1 should contain 'HasAtt' and 'id' as its binded to label.
}
private void ViewAttachment(int id)
{
//Here you write your logic to view attachment.
}
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType == DataControlRowType.DataRow) // checking if row is datarow or not
{
Label lblHasAtt = e.Row.FindControl("lblAtt") as Label;
LinkButton lbtnViewAtt = e.Row.FindControl("lbtnAtt") as LinkButton;
lbtnViewAtt.Visible = (lblHasAtt.Text.ToLower() == "yes");
}
}
protected void lbtnAtt_Click(object sender, EventArgs e)
{
LinkButton lbtnViewAtt = sender as LinkButton;
GridViewRow grw = lbtnViewAtt.NamingContainer as GridViewRow;
int id = Convert.ToInt32(this.GridView1.Rows[grw.RowIndex].Cells[0].Text); // retriving value of first column on 'lbtnAtt' click row.
this.ViewAttachment(id);
}
I recall being able to parse through the grid view by using a for each for the rows and using a for statement for columns.
If I recall correctly, you can grab an item ie
row.Item[i]
foreach(GridViewRow row in GridView1.Rows)
{
for(int i = 0; i < GridView1.Columns.Count; i++)
{
// here you can do the logic to decide whether to show or hide the text for this cell
}
}
Sorry for formatting responding on my phone.
I am trying to disable a specific grdview row using the code below, but it isn't disabling that row. I am 100% sure there is a value called "Total Expenses" in the column that is bound to the gridview. What is more strange is that, I removed the if condition(accountTextBox.Text == "Total Expenses") to see if all the rows get disabled but only the first row is getting disabled. Any thoughts on this?
More information: Am using gridview with template fields(ASP.NET, C#). I also ran debugger and found that the accountTextBox is showing NULL. Am puzzled!
I appreciate any thoughts you may have. Thank you
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
if (!tableCopied)
{
originalDataTable = ((System.Data.DataRowView)e.Row.DataItem).Row.Table.Copy();
ViewState["originalValuesDataTable"] = originalDataTable;
tableCopied = true;
TextBox accountTextBox = (TextBox)e.Row.FindControl("AccountTextBox");
if (accountTextBox.Text == "Total Expenses")
{
e.Row.Enabled = false;
}
}
}
I'm assuming your markup looks something like this:
<asp:TemplateField HeaderText="SomeField" SortExpression="SomeField">
<EditItemTemplate>
<asp:TextBox ID="AccountTextBox" runat="server" Text='<%# Bind("SomeField") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("SomeField") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
In which case AccountTextBox will only be available in RowDataBound when e.Row.State is in Edit mode. which may or may not be available depending what update functionality is provided in your datasource...but that's something else.
Typically you don't use a TextBox to display data but lets say trying to populate a "readonly" TextBox then all you need do is move AccountTextBox from the EditTemplate to the ItemTemplate and you should be good to go.
Using the following code-behind:
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
gvTest.DataSource = new List<string>() { "test1", "test2" };
gvTest.DataBind();
}
private bool tableCopied = false;
private System.Data.DataTable originalDataTable;
protected void gvTest_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
if (!tableCopied)
{
//originalDataTable = ((System.Data.DataRowView)e.Row.DataItem).Row.Table.Copy();
//ViewState["originalValuesDataTable"] = originalDataTable;
//tableCopied = true;
TextBox accountTextBox = (TextBox)e.Row.FindControl("AccountTextBox");
if (accountTextBox.Text == "Total Expenses")
{
e.Row.Enabled = false;
}
}
}
}
And this markup:
<asp:GridView runat="server" ID="gvTest" OnRowDataBound="gvTest_RowDataBound">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:TextBox ID="AccountTextBox" runat="server">Total Expenses</asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
I am not reproducing the bug. Both rows disable for me.
The tableCopied variable could be the problem. It will be set to true on the first row and this will restrict the remaining rows to enter the if condition and actually be disabled.
First row:
//tableCopied is false
if(!tableCopied) // pass
tableCopied = true
Other rows:
//tableCopied is true
if(!tableCopied) // wont pass
Note that the GridView1_RowDataBound event occurs once for every row on the same postback and every class member is persisted during the postback.
I want to prompt the user for confirmation when he tries to delete a record in a detail view? I have command filed in which showDeletebutton set to true.
I found how to do the confirmation for gridview, but how can I modify to match detail view?
Code:
protected void GridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
// loop all data rows
foreach (DataControlFieldCell cell in e.Row.Cells)
{
// check all cells in one row
foreach (Control control in cell.Controls)
{
// Must use LinkButton here instead of ImageButton
// if you are having Links (not images) as the command button.
ImageButton button = control as ImageButton;
if (button != null && button.CommandName == "Delete")
// Add delete confirmation
button.OnClientClick = "if (!confirm('Are you sure " +
"you want to delete this record?')) return;";
}
}
}
}
Anybody?
<asp:DetailsView ID="DetailsView1" runat="server" Height="50px" Width="125px"
.....
<asp:BoundField DataField="price" HeaderText="price" SortExpression="price" />
<asp:BoundField DataField="Quantity" HeaderText="Quantity"
SortExpression="Quantity" />
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False"
CommandName="New" Text="New"></asp:LinkButton>
<asp:LinkButton ID="lnkDelete" runat="server" CausesValidation="False"
CommandName="Delete" Text="Delete" OnClientClick="return confirm('Are you sure you want to delete this record');"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Fields>
</asp:DetailsView
This can be done easily on the markup code. I simply added the js code to the onClientClick property of the delete button:
OnClientClick="return confirm('Are you sure you want to delete this record');"
Or if you want do this in the code behind:
protected void DetailsView1_DataBound(object sender, EventArgs e)
{
LinkButton bttn = (LinkButton)DetailsView1.FindControl("lnkDelete");
bttn.OnClientClick = "return confirm('Are you sure you want to delete this record!');";
}
I found the answer to my question.
My answer:
protected void DViewComputer_DataBound1(object sender, EventArgs e)
{
int noRow = DViewComputer.Rows.Count - 1;//get the no of record
if (noRow >0)
{
Button button = (Button)(DViewComputer.Rows[noRow].Cells[0].Controls[2]);
// Add delete confirmation
((System.Web.UI.WebControls.Button)(button)).OnClientClick = "if (!confirm('Are you sure " +
"you want to delete this record?')) return;";
}
}
Anyways thanks for your help guys.
foreach (Control control in cell.Controls)
{
// Must use LinkButton here instead of ImageButton
// if you are having Links (not images) as the command button.
ImageButton button = control as ImageButton;
if (button != null && button.CommandName == "Delete")
// Add delete confirmation
button.Attributes.Add("onclick","your javascript here");
}
Please see the below URL......
http://www.codeproject.com/Articles/32756/ASP-NET-GridView-delete-confirmation-using-asp-Com
This corrects the OP's solution. The code was translated from the code found here: http://forums.aspfree.com/net-development-11/confirm-button-when-deleting-detailsview-120113-2.html
protected void dvEvent_DataBound(object sender, EventArgs e)
{
int commandRowIndex = dvEvent.Rows.Count - 1;
if (commandRowIndex > 0)
{
DetailsViewRow commandRow = dvEvent.Rows[commandRowIndex];
DataControlFieldCell cell = (DataControlFieldCell)commandRow.Controls[0];
foreach (Control ctrl in cell.Controls)
{
if (ctrl is ImageButton)
{
ImageButton ibt = (ImageButton)ctrl;
if (ibt.CommandName == "Delete")
{
ibt.ToolTip = "Click here to Delete";
ibt.CommandName = "Delete";
ibt.Attributes["onClick"] = "if (!confirm('Are you sure " +
"you want to delete this record?')) return;";
}
}
}
}
}
basically i wish to set a session folo by button click, but i failed to do so
i failed to call abcde function(), don't know what to set,i did try onRowCommand,onDataBound,OnDataBinding
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1">
my link button on gridview
<asp:LinkButton ID="lnkname" runat="server" Text='<%#Eval("movieTitle") %>' Width=500 CommandName="cmdLink">
in order to find link button control i did try DataGridItemEventArgs, but it didnt work as well
protected void abcde(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "cmdLink")
{
string path = //some path;
Session["path"] = path;
((LinkButton)e.Item.FindControl("lnkname")).PostBackUrl = "~/somewhere/ + Session["path"].ToString()";
}
}
y i do so is because my next page function is depend on the session
i use gridview RowCommand
the aspx code snippet
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="btnLink" runat="server" CommandName="btnLinkClick"
CommandArgument='<%# Bind("roll") %>' Text="Find Name"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
the code behind snippet
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "btnLinkClick")
{
string path = //some path;
Session["path"] = path;
var button = e.CommandSource as LinkButton;
button.PostBackUrl = path;
}
}
here an interesting thing is if u set a postbackurl then second time you didn't get to server side it goes to your given url
if you simply want to set url, it is quite easy you can make a property url then bind it through button.PostBackUrl. also if u need some value from client side then set eventagument
Ok, I'm not entirely sure what you mean, however in case you're asking how to manipulate controls within the grid on databinding, it goes like this:
protected void grdvResults_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.DataItem != null)
{
((LinkButton)e.Row.FindControl("lnkname")).PostBackUrl = "~/somewhere/" + Session["path"].ToString();
}
}
you need to set CommandArgument in likbutton declaration, so that you can use it for binding. GridViewRowcommandEvents
protected void abcde(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "cmdLink")
{
string path = //some path;
Session["path"] = path;
LinkButton objButton = (LinkButton)e.Item.FindControl("lnkname"); //this is you are missing
objButton.PostBackUrl = "~/somewhere/" + Session["path"].ToString()";
}
}
I wrote a method that deletes rows from my an asp.net Gridview when the delete button is clicked and another method for when the edit button is clicked.
Both Edit and Delete buttons are part of the built in gridview controls.
However when I press these buttons (edit/delete)and exception is thrown.
Unable to cast object of type 'System.Web.UI.WebControls.GridView' to type 'System.Web.UI.WebControls.Button'. which is pointing at the line
Button btn = (Button)sender;
The problem here is that this line is not related to either of the edit or delete methods. It is related to the asp button in another column, and for that reason I am lost. How can I resolve this issue? What is causing both the OnRowDeleting and OnRowEditing conflict with the showResponses method?
Here is the aspx
<asp:GridView runat="server" ID="gvShowQuestionnaires" HeaderStyle-CssClass="table_header" CssClass="view" AlternatingRowStyle-CssClass="alt" AlternatingRowStyle-BackColor="#f3f4f8" AutoGenerateColumns="False"
DataKeyNames='QuestionnaireID' OnRowDeleting="gvShowQuestionnaires_RowDeleting" OnRowEditing="gvShowQuestionnaires_RowEdit" FooterStyle-CssClass="view_table_footer" OnRowCommand="showResponses">
<Columns>
<asp:BoundField DataField="QuestionnaireID" HeaderText="ID" HeaderStyle-Width="80px" ItemStyle-CssClass="bo"></asp:BoundField>
<asp:BoundField DataField="QuestionnaireName" HeaderText="Questionnaire Name" />
<asp:TemplateField HeaderText="Results" HeaderStyle-Width="150px">
<ItemTemplate>
<asp:Button runat="server" ID="button1" CommandArgument='<%# Eval("QuestionnaireID") %>' OnClick="showResponses" text="Results"/>
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField HeaderText="Options" ShowDeleteButton="True" ShowEditButton="true" EditText="Edit"></asp:CommandField>
</Columns>
</asp:GridView>
And here is the code behind:
protected void gvShowQuestionnaires_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int questionnaireID = (int)gvShowQuestionnaires.DataKeys[Convert.ToInt32(e.RowIndex)].Value;
GetData.DeleteQuestionnaire(questionnaireID);
gvShowQuestionnaires.DataSource = DT;
gvShowQuestionnaires.DataBind();
}
protected void gvShowQuestionnaires_RowEdit(object sender, GridViewEditEventArgs e)
{
string id = gvShowQuestionnaires.Rows[e.NewEditIndex].Cells[0].Text;
Session["qID"] = id;
Response.Redirect("~/members/edit_questionnaire.aspx");
}
protected void showResponses(object sender, EventArgs e)
{
Button btn = (Button)sender;
string id = btn.CommandArgument.ToString();
Session["qID"] = id;
Response.Redirect("~/members/questionnaire_responses.aspx");
}
Any help would much appreciated.
It seems reasonably clear to me. Here:
<asp:GridView runat="server" ... OnRowCommand="showResponses">
you bind the RowCommand event to showResponses. And here, in showResponses, you assume that the sender is a button:
protected void showResponses(object sender, EventArgs e)
{
Button btn = (Button)sender;
string id = btn.CommandArgument.ToString();
Session["qID"] = id;
Response.Redirect("~/members/questionnaire_responses.aspx");
}
The sender isn't a button - it's the grid view. If you want the command argument, you should use GridViewCommandEventArgs.CommandArgument.
protected void showResponses(object sender, GridViewCommandEventArgs e)
{
Session["qID"] = e.CommandArgument;
Response.Redirect("~/members/questionnaire_responses.aspx");
}
Add a CommandName attribute to your button1 in the GridView.
<asp:Button runat="server" ID="button1" CommandName="Button1" CommandArgument='<%# Eval("QuestionnaireID") %>' OnClick="showResponses" text="Results"/>
Then in showResponses do this...
protected void showResponses(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Button1") {
Session["qID"] = e.CommandArgument;
Response.Redirect("~/members/questionnaire_responses.aspx");
}
}
var btnSender = (Button)e.CommandSource;