The row has a LinkButton that when clicked needs to highlight the row.
Code so far:
protected void linkbutton1_Click(object sender, EventArgs e)
{
LinkButton l = (LinkButton)sender;
GridViewRow g = (GridViewRow)l.Parent; // what is the correct way to do this?
//g.Style etc etc
}
first of all set the "CommandName" property of LinkButton to "select",
then in the selectedIndexChanging event of gridview write below code:
for (int i = 0; i < GridView1.Rows.Count;i++ )
GridView1.Rows[i].BackColor = System.Drawing.Color.White;
GridView1.Rows[e.NewSelectedIndex].BackColor = System.Drawing.Color.Cornsilk;
Make use of the RowCommand event of the GridView instead of the Click event of the LinkButton.
Then you can have a CommandName on the LinkButton such as "HighlightRow" and do something like the following:
Select Case e.CommandName
Case "HighlightRow"
e.item.row.attributes("class") = "highlight"
End Select
Sorry its in VB.NET and not C#
1.) Set Command Name Property to "Select"
2.) Change style either on code behind as shown by #Raymond or give set Cssclass attribute for
SelectedRowStyle of gridview to CssClass="selecterowstyle"
.selectedRowstyle
{
background-color:#EAEAEA;
}
Related
How can I get the index of a gridview row in edit mode from an event that is not a gridview event?
I have a DDL in a cell of the Gridview. When the DDL changes I want to perform an update to a label of another cell in the same row.
So I am using the DDL_SelectedIndexChanged Event and have everything working including the post to the label, but its always the frist row. What is the correct way to get the row index in edit mode from outside of a gridview event?
Thanks,
try this
protected void DDL_SelectedIndexChanged(Object sender, EventArgs e)
{
DropDownList ddlcontrol = (DropDownList) sender;
GridViewRow grrow = (GridViewRow) ddlcontrol.NamingContainer;
int rowindex = grrow.RowIndex;
}
I have a PlaceHolder control inside of a ListView that I am using to render controls from my code behind. The code below adds the controls:
TextBox tb = new TextBox();
tb.Text = quest.Value;
tb.ID = quest.ShortName.Replace(" ", "");
((PlaceHolder)e.Item.FindControl("ph_QuestionInput")).Controls.Add(tb);
I am using the following code to retrieve the values that have been entered into the TextBox:
foreach (ListViewDataItem di in lv_Questions.Items)
{
int QuestionId = Convert.ToInt32(((HiddenField)di.FindControl("hf_QuestionId")).Value);
Question quest = dc.Questions.Single(q => q.QuestionId == QuestionId);
TextBox tb = ((TextBox)di.FindControl(quest.ShortName.Replace(" ","")));
//tb is always null!
}
But it never finds the control. I've looked at the source code for the page and the control i want has the id:
ctl00_cphContentMiddle_lv_Questions_ctrl0_Numberofacres
For some reason when I look at the controls in the ListViewDataItem it has the ClientID:
ctl00_cphContentMiddle_lv_Questions_ctrl0_ctl00
Why would it be changing Numberofacres to ctl00? Is there any way to work around this?
UPDATE:
Just to clarify, I am databinding my ListView in the Page_Init event. I then create the controls in the ItemBound event for my ListView. But based on what #Womp and MSDN are saying the controls won't actually be created until after the Load event (which is after the Page_Init event) and therefore are not in ViewState? Does this sound correct?
If so am I just SOL when it comes to retrieving the values in my dynamic controls from my OnClick event?
UPDATE 2:
So i changed the code i had in my Page_Init event from:
protected void Page_Init(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
//databind lv_Questions
}
}
to:
protected void Page_Init(object sender, EventArgs e)
{
//databind lv_Questions
}
And it fixed my problem. Still a little confused as to why I want to databind regardless of whether it's a postback or not but the issue is resolved.
It looks like you're adding your textbox to a Placeholder control... but then you're searching a ListViewDataItem container for it later.
Seems to me that you need to search for the Placeholder first, and then search it for the textbox.
How to access gridview commandfield delete button on RowDataBound event?
How the cells and controls in griview are accessed
Please try the code below. This is for adding a delete confirmation. But you can use it for anything you want.
if (e.Row.RowType == DataControlRowType.DataRow)
{
if (e.Row.Cells[1].HasControls())
{
LinkButton lnkbtnDelete = ((LinkButton)e.Row.Cells[1].Controls[0]);
lnkbtnDelete.Attributes.Add("onclick", "return confirm('Do you want to Delete?');");
}
}
HTH
See:
protected void YourGrid_RowDataBound(Object sender, GridViewRowEventArgs e)
{
Control button = e.Row.FindControl("btnSubmit");
if (button != null && checkBox is Button)
{
// do what you want
}
}
In RowDataBound event you may access row inner controls through FindControl method.
In the example above I assumed that you control is a Button control with btnSubmit identifier.
Edit: after the author's problem additional explanation:
(ButtonType)e.Row.Cells[commandFieldIndex].Controls[controlIndex];
ButtonType is the type of button being used by the CommandField - Button, LinkButton, or ImageButton. By default, the CommandField uses LinkButtons, but this can be customized via the CommandField’s ButtonType property.
I have a GridView which is databound to an XML Datasource. For one of the columns I'm using a TemplateField and within it's ItemTemplate I have a CheckBox. I need to programatically add an EventHandler to the CheckBox. I was wondering if anyone can tell me which EventHandler from the GridView to use to add a CheckedChanged EventHandler to the CheckBox?
I've tried RowCreated and DataBound and haven't been able to get the CheckBox to postback with the CheckChanged EventHandler.
void gridPartnerSelection_RowCreated(object sender, GridViewRowEventArgs e)
{
GridViewRow row = e.Row;
if (row.RowType == DataControlRowType.DataRow)
{
CheckBox ckbSendEmail = row.Cells[2].FindControl("ckbSendEmail") as CheckBox;
ckbSendEmail.CheckedChanged += new EventHandler(ckbSendEmail_CheckedChanged);
}
}
Thank you.
Turns out I had to set the AutoPostBack property of the CheckBox to True :)
I'm willing to delete this question if it won't be helpful to anyone else.
I am haveing problems getting the command event args following the second click using the code below.
so - when i process a button click, and generate a new button to replace the one that was there i lose the viewstate on the next button click.
Any suggestions on what I need to do to get this to work? I cannot significantly change the structure as I must generate a variable number of totally un-related buttons in the command handler.
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
{
LinkButton btn = new LinkButton();
btn.ID = "btn1";
this.Panel1.Controls.Add(btn);
btn.Command += new CommandEventHandler(myLinkButton_Command);
}
else
{
LinkButton btn = new LinkButton();
btn.ID = "btn1";
this.Panel1.Controls.Add(btn);
btn.Text = "My Button 1";
btn.CommandArgument = "1";
btn.Command += new CommandEventHandler(myLinkButton_Command);
}
}
void myLinkButton_Command(object sender, CommandEventArgs e)
{
int newArg = Convert.ToInt32(e.CommandArgument) + 1;// empty string on second mouse click
this.Panel1.Controls.Clear();
LinkButton myLinkButton = new LinkButton();
myLinkButton.ID = "btn1";
this.Panel1.Controls.Add(myLinkButton);
myLinkButton.Text = "My Button " + newArg.ToString();
myLinkButton.CommandArgument = newArg.ToString();
}
}
This happens because your panel has a literal control in it. When you add your button the first time, it (the button) is a second control. When you later clear panel's controls collection, it becomes the first control and the viewstate is saved for the first control, which on following postback becomes the literal.
Simply convert
<asp:Panel ID="Panel1" runat="server">
</asp:Panel>
to
<asp:Panel ID="Panel1" runat="server" />
and it will work.
You have forgotten to set the CommandArgument property when you recreate the button in Page_Load.