I have a CheckBox inside a Repeater. Like this:
<asp:Repeater ID="rptEvaluationInfo" runat="server">
<ItemTemplate>
<asp:Label runat="server" Id="lblCampCode" Text="<%#Eval("CampCode") %>"></asp:Label>
<asp:CheckBox runat="server" ID="cbCoaching" value="coaching-required" ClientIDMode="AutoID" AutoPostBack="True" OnCheckedChanged="cbCoaching_OnCheckedChanged" />
</ItemTemplate>
</asp:Repeater>
When some one clicks on the checkbox I want to get that entire row in my code behind. So if a CheckedChanged happens I want to get the Text of the Label lblCampCode in code behind.
Is it possible?
I have managed to write this much code.
protected void cbCoaching_OnCheckedChanged(object sender, EventArgs e)
{
CheckBox chk = (CheckBox)sender;
Repeater rpt = (Repeater)chk.Parent.Parent;
string CampCode = "";// here i want to get the value of CampCode in that row
}
So you want to get the RepeaterItem? You do that by casting the NamingContainer of the CheckBox(the sender argument). Then you're almost there, you need FindControl for the label:
protected void cbCoaching_OnCheckedChanged(object sender, EventArgs e)
{
CheckBox chk = (CheckBox)sender;
RepeaterItem item = (RepeaterItem) chk.NamingContainer;
Label lblCampCode = (Label) item.FindControl("lblCampCode");
string CampCode = lblCampCode.Text;// here i want to get the value of CampCode in that row
}
This has the big advantage over Parent.Parent-approaches that it works even if you add other container controls like Panel or Table.
By the way, this works the similar way for any databound web-control in ASP.NET (like GridView etc).
Related
Hi have the following vb code in ASP.NET:
<asp:Repeater ID="Repeater1" runat="server" DataSourceID="SQL_SRC_DEV_HIERACHY">
<ItemTemplate>
<p class="input_title">Hierachy:
<asp:Literal ID="Literal1" runat="server" Text='<%# Eval("Hierarchy_SKey")%>'></asp:Literal><br />
</p>
<asp:DropDownList ID="DropDownList_H" runat="server" DataSourceID="SQL_SRC_DEV_GROUPINGDESCS" DataTextField="Description" DataValueField="FTE_PARENT_SKEY"></asp:DropDownList><br />
</ItemTemplate>
</asp:Repeater>
I now need to get the selectedvalues for each instance of dropdown created, and += to a variable so that I can built a SQL INSERT command based on the selected values.
Can anybody point me in the right direction to achieve this please? Thanks.
You can loop the items in the Repeater in code behind and use FindControl to get the SelectedValue of the DropDownList.
protected void Button1_Click(object sender, EventArgs e)
{
//loop all the items in the repeater
foreach (RepeaterItem item in Repeater1.Items)
{
//use findcontrol to locate the dropdownlist and cast it back to one
DropDownList drp = item.FindControl("DropDownList_H") as DropDownList;
//display the result
Label1.Text += drp.SelectedValue;
}
}
Thanks VDWWD - I have converted to VB and it work perfectly! Much appreciated.
VB version shown below:
Protected Sub GEN_CODE()
Dim txtField As DropDownList
Dim DDL_Values As String = ""
For Each item In Repeater1.Items
//use findcontrol to locate the dropdownlist and cast it back to one
txtField = item.FindControl("DropDownList_H")
//display the result
DDL_Values += " " + txtField.SelectedValue
Next
End Sub
Here is my aspx code:
<EditItemTemplate>
<asp:DropDownList ID="ddlTotalColumn" runat="server">
<asp:ListItem Value="">Select value</asp:ListItem>
<asp:ListItem Value="0">1</asp:ListItem>
<asp:ListItem Value="1">2</asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
My aspx.cs code:
protected void gvTest_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
GridViewRow selected_row = gvTest.Rows[e.RowIndex];
var total_column_drop_down_list = (DropDownList)selected_row.FindControl("ddlTotalColumn");
int column_string = Convert.ToInt32(total_column_drop_down_list.SelectedItem.Value);
gvTest.EditIndex = -1;
...
}
At this line: int column_string = Convert.ToInt32(total_column_drop_down_list.SelectedItem.Value);
I have an error: "Input string was in incorrect format" because "total_column_drop_down_list.SelectedItem.Value" will return empty string ("").
So is there any bright idea?
It sounds like you have made the classic mistake of not putting your databinding code inside a if (!Page.IsPostBack) block. Thus, your GridView re-binds, and you get default values in your RowUpdating event (rather than what you selected).
Wherever you are binding your GridView, in Page_Load for instance, you need to do this:
if (!Page.IsPostBack)
{
BindGrid();
}
Where "BindGrid()" is whatever code you call to databind your GridView.
On a slightly unrelated note, you can actually use the GridViewUpdateEventArgs parameter that's passed to that method to grab the updated values (rather than using FindControl to get the DropDownList, and then getting the values).
I have created a form for saving Medium details, columns are, MID,MediumName,CreationDate,Status.I have bind full table in a gridview name gvmedium, i am having a textbox on the form .I want to fill the text box from grid views value of column MediumName on the template button click event.can any one help me?
You can use CommandName and Command Argument to achieve it and on Code Behind use RowCommand event.
<ItemTemplate>
<asp:LinkButton ID="lnkResetPassword" Text="Reset Password" runat="server" CommandName="ResetPassword" CommandArgument='<%# Bind("UserId") %>'></asp:LinkButton>
</ItemTemplate>
and then do your work here
protected void grdUserGroupList_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "ResetPassword")
{
GridViewRow gvr = (GridViewRow)(((LinkButton)e.CommandSource).NamingContainer);
int RowIndex = gvr.RowIndex;
lblMId.Text = e.CommandArgument.ToString();
txtMedium.Text=gvMedium.Rows[RowIndex ].Cells[0].Text;
}
}
UI Feature: I have a GridView with few columns. Most important column is PcCode, which shows a string value for each row.
Expected: When I click on one of the cell from a row of that PcCode column another GridView should be displayed. However, when I am trying to use a asp:LinkButton for a cell, things just don't work. RowCommand does not get triggered when I click on a asp:LinkButton in the GridView cell. Where am I doing things wrong? Which way the expected functionality can be achieved? Thanks in advance for helping out a newbie.
In the following code I was trying to get a RowIndex and pass it through the CommandArgument and use a CommandName.
.aspx code
<asp:GridView ID="_UIProfitcenterTotalGridView" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None" AllowPaging="True" PageSize="22" ShowFooter="True" AutoGenerateColumns="False"
DataKeyNames="ProfitcenterCode" EnableViewState="False"
OnRowDataBound="_UIProfitcenterTotalGridView_RowDataBound"
OnPageIndexChanging="_UIProfitcenterTotalGridView_PageIndexChanging"
OnRowCommand="_UIProfitcenterTotalGridView_OnRowCommand">
<Columns>
<asp:TemplateField HeaderText="PcCode" InsertVisible="False"
ShowHeader="False" SortExpression="ProfitcenterCode" FooterText="Total" FooterStyle-HorizontalAlign="Left">
<ItemTemplate>
<asp:LinkButton ID="_UIPCCodeLinkButton" runat="server" Text='<%# Eval("ProfitcenterCode") %>'
CommandName="Select"
CommandArgument='<%# ((GridViewRow) Container).RowIndex %>'>
</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
...
code behind for aspx.cs
protected void _UIProfitcenterTotalGridView_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Select")
{
int index = Convert.ToInt32(e.CommandArgument);
GridViewRow row = _UIProfitcenterTotalGridView.Rows[index];
string ProfitcenterCode = _UIProfitcenterTotalGridView.DataKeys[_UIProfitcenterTotalGridView.SelectedIndex].Values["ProfitcenterCode"].ToString();
}
}
After the row is selected I need to take the selected row's value as a string and compare with a listitem to show a new GridView.
Tried
Using Link_Button_Click(Object sender, EventArgs e) and the following but failed.
protected void _UIProfitcenterTotalGridView_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Select")
{string ProfitcenterCode = ((GridViewRow)(((LinkButton)e.CommandSource).NamingContainer)).Cells[2].Text;
}
}
I tried to use LinkButton_Click() event instead of RowCommand as jason suggested:
protected void LinkButton_Click(Object sender, EventArgs e)
{
LinkButton button = (LinkButton)sender;
GridViewRow row = (GridViewRow)button.NamingContainer;
if (row != null)
{
string theValue = ((LinkButton)sender).CommandArgument.ToString();
...
...
//code for the extra thing I needed to do after selecting a cell value.
}
}
However I still had the problem, which I figured out. The problem was the LinkButton was not binding to the rows thefore, it could not pass any value on selection. What was missing was the following code:
if (e.Row.RowType == DataControlRowType.DataRow)
{
LinkButton linkButton = new LinkButton();
linkButton.Text = e.Row.Cells[0].Text; //value of the first column from the grid
linkButton.Enabled = true;
linkButton.Click += new EventHandler(LinkButton_Click); //triggering the LinkButton event here.
e.Row.Cells[0].Controls.Add(linkButton);
}
You can use the sender object ( the link button that calls the event) and get the parent row from the gridview. Example:
Protected Sub linkButton_click(ByVal sender As Object, ByVal e As EventArgs)
'First cast the sender to a link button
Dim btn As LinkButton = CType(sender, LinkButton)
'now, if there is a command arguement, you can get that like this
Dim id As String = btn.CommandArgument
'to get the gridviewrow that the button is on:
Dim row As GridViewRow = CType(btn.NamingContainer, GridViewRow)
End Sub
It was hard to follow exactly what you were looking for, so if i missed something let me know and I will add it.
protected void linkButton_click(object sender, EventArgs e)
{
//First cast the sender to a link button
LinkButton btn = (LinkButton)sender;
//now, if there is a command arguement, you can get that like this
string id = btn.CommandArgument;
//to get the gridviewrow that the button is on:
GridViewRow row = (GridViewRow)btn.NamingContainer;
}
And change your linkbutton to:
<asp:LinkButton OnClick="linkButton_click" ID="_UIPCCodeLinkButton"
runat="server" Text='<%# Eval("ProfitcenterCode") %>'
CommandName="Select"
CommandArgument='<%# ((GridViewRow) Container).RowIndex %>'>
I have nested repeaters on my aspx page.In the outer repeater I am displaying a list of products and in the inner repeater I am displaying a list of additional options associated with each product.The inner repeater contains a checkbox,textbox,label and other stuff.I would like to find the controls inside the outer repeater when a user selects a checkbox in the inner repeater.In order to handle this I am using the following code.
<asp:Repeater ID="OuterRepeater" runat="server"
onitemdatabound="OuterRepeater_ItemDataBound" >
<ItemTemplate>
<asp:Label ID="CodeLabel" runat="server" Text='<%# Eval("Code") %>'></asp:Label>
<asp:Repeater ID="InnerRepeater" runat="server" OnItemCreated="InnerRepeater_ItemCreated">
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="true"/>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
......
.......
</ItemTemplate>
</asp:Repeater>
......
......
</ItemTemplate>
</asp:Repeater>
protected void InnerRepeater_ItemCreated(object sender, RepeaterItemEventArgs e)
{
RepeaterItem ri = (RepeaterItem)e.Item;
if (ri.ItemType == ListItemType.Item || ri.ItemType == ListItemType.AlternatingItem
)
{
CheckBox cb = ri.FindControl("CheckBox1") as CheckBox;
cb.CheckedChanged += new EventHandler(CheckBox1_CheckedChanged);
}
}
private void CheckBox1_CheckedChanged(object sender, EventArgs e)
{
CheckBox cb = (CheckBox)sender;
if (cb.Checked)
{
//do something
}
else
{
//do something
}
}
But the checkedChanged event of the checkbox is not firing for some reason.Also I am not sure how to access the textbox of the outer repeater in the checked changed event of the innter repeater checkbox control.
Could someone please help me with this?
Thanks
It does not fire the CheckedChanged event, since you have declared the event handler as private, You have to make it Protected or Public
Protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
You can access the Textbox control like..
private void CheckBox1_CheckedChanged(object sender, EventArgs e)
{
CheckBox checkBox = (CheckBox)sender;
Textbox textbox1 = (TextBox)checkBox.Parent.FindControl("TextBox1");
String textboxText = textbox1.Text;
}
It doesn't look like you defined an event handler in your markup.
<asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="true" OnCheckedChanged="CheckBox1_CheckedChanged" />
Muhammad Akhtar's answer helped me a lot today!
I just needed to set a specific ID to my dynamic generated checkboxes inside my reapeater to recover the origin of the event, and do the rest of the processing, and it worked perfectly.
chkAtivo.ID = DataBinder.Eval(e.Item.DataItem, "id").ToString();
Reovered just as the sample.
Cant vote up yet, but thank you.