I have the data displayed in the grid as follows:
StartDate Enddate Button
16/3/2013 17/3/2013 Signup---> this is an ASP button
18/3/2013 19/3/2012 Signup----> this is an ASP button
20/3/2012 20/3/2012 Signup----> this is an ASP button
I want asp.net with c# code when i clicked on first row signup button i want to get the data of the first row. If clicked on second row i want only the data of the second row startdate and end time. How can i acheive this? Please hep me in this regard.
In the asp button, Set properties: CommandName="SignUp" CommandArgument='<%# Container.DataItemIndex%>'
Now, when this button is clicked it calls Gridview's RowCommand Event
In that event e.CommandArgument contains your Row Number.
GridViewRow gvr= gvLinkImages.Rows[e.CommandArgument];
Now you can use gvr.Cells[column number] to get the particular text (Not recommended)
or use findcontrol to get the label or literal of the start/end date( assuming you are using Templatefields)
Sample code below
C#
protected void gvResults_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "SignUp")
{
int rwNumber = Convert.ToInt32(e.CommandArgument);
GridViewRow gvr = gvResults.Rows(rwNumber);
System.DateTime rowStartDate = default(System.DateTime);
System.DateTime rowEndDate = default(System.DateTime);
//If you are using Templatefields
Literal lblRowStartDate = gvr.FindControl("lblStartDate") as Literal;
Literal lblRowEndDate = gvr.FindControl("lblEndDate") as Literal;
rowStartDate = Convert.ToDateTime(lblRowStartDate.Text);
rowEndDate = Convert.ToDateTime(lblRowEndDate.Text);
//Incase you are not using TemplateFields or Autobinding your grid
rowStartDate = Convert.ToDateTime(gvr.Cells[0].Text);
rowEndDate = Convert.ToDateTime(gvr.Cells[1].Text);
}
}
ASPX
<asp:GridView runat="server" ID="gvResults" AutoGenerateColumns="false" OnRowCommand="gvResults_RowCommand">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Literal runat="server" ID="lblStartDate" Text='<%#Container.DataItem.StartDate%>'></asp:Literal>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:Literal runat="server" ID="lblStartDate" Text='<%#Container.DataItem.EndDate%>'></asp:Literal>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:Button runat="server" ID="btnSignUp" CommandName="SignUp" CommandArgument="<%# Container.DataItemIndex %>" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Related
I have a DetailsView which works fine using a data access layer and a query string. However, I'd like to extract one of the fields and use it as the text in a label to go above the DetailsView as a title to that page.
Is this possible? And if so, how?
This is an abstract of the DetailsView:
<Fields>
<asp:BoundField DataField="bandname" HeaderText="Band" />
<asp:BoundField DataField="contactname" HeaderText="Contact" />
<asp:BoundField DataField="county" HeaderText="County" />
</Fields>
and the code behind:
if (Request.QueryString.Count != 0)
{
int id = int.Parse(Request.QueryString["bandid"]);
dtvBand.Visible = true;
List<Band> bandDetails = new List<Band> { BandDAL.AnonGetAllBandDetails(id) };
dtvBand.DataSource = bandDetails;
dtvBand.DataBind();
}
What I'd like to do is take the data in the first BoundField row and make it the text of a label. Pseudocode:
Label1.Text = (<asp:BoundField DataField="band")
I would not try to find the text on the DetailsView but in it's DataSource. You could use the DataBound event which is triggered after the DetailsView was databound, so it's ensured that the DataItem exists.
It depends on the Datasource of your DetailsView. Often it is a DataRowView. You have to cast it, then you can access it's column:
protected void DetailsView1_DataBound(Object sender, EventArgs e)
{
DetailsView dv = (DetailsView)sender;
string yourText = (string)((DataRowView)dv.DataItem)["ColumnName"];
Label1.Text = yourText;
}
If it's not a DataRowView use the debugger to see what dv.DataItem actually is.
I managed to achieve what I wanted using:
string titletext = dtvBand.Rows[0].Cells[1].Text.ToString();
dtvBand.Rows[0].Visible = false;
lblBand.Text = titletext;
It takes the first row of the DetailsView, puts it above the rest in a Label so it can be formatted as a header, then hides the first row of the DetailsView.
How about using a TemplateField as what Tim mentioned:
<Fields>
<asp:TemplateField>
<ItemTemplate>
<asp:Label ID="lblName" runat="server" Text='<%# Eval("Band") %>' />
</ItemTemplate>
</asp:TemplateField>
</Fields>
At the beginning I have to say that I tried to find the answer... And yes I'm new in ASP.Net world :)
I would like to use DropDownList in an EditItemTemplate field in GridView. I found I cannot set parametr SelectedValue. It's missing. When I try to set it in code behind it seems to ddlEditPermissions doesn't exists.
<asp:TemplateField HeaderText="opravneni" SortExpression="opravneni">
<edititemtemplate>
<asp:DropDownList ID="ddlEditPermissions" runat="server" DataSource='<%# getPermissions() %>' OnPreRender="ddlEditPermissions_PreRender"/>
</edititemtemplate>
<insertitemtemplate>
<asp:TextBox ID="tbEditPermissions" runat="server" Text='<%# Bind("opravneni") %>'></asp:TextBox>
</insertitemtemplate>
<itemtemplate>
<asp:Label ID="lEditPermissions" runat="server" Text='<%# Bind("opravneni") %>'></asp:Label>
</itemtemplate>
I'm really confused. Could anyone advise me?
You can use RowDataBound of the GridView which gets triggered for every GridViewRow after it was constructed and databound:
protected void gridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow && e.Row.RowState == DataControlRowState.Edit)
{
var ddlEditPermissions = (DropDownList)e.Row.FindControl("ddlEditPermissions");
// bind DropDown manually
ddlEditPermissions.DataSource = getPermissions();
ddlEditPermissions.DataTextField = "Permission_Name"; // presumed text-column
ddlEditPermissions.DataValueField = "Permission_ID"; // presumed id-column
ddlEditPermissions.DataBind();
DataRowView dr = e.Row.DataItem as DataRowView; // you might need to change this type, use the debugger then to determine it
ddlEditPermissions.SelectedValue = dr["Permission_ID"].ToString(); // presumed foreign-key-column
}
}
I have a gridview on my page, there is three columns, one is for quantity, i need to use MaskEditExtender with simple TextBox, but it is working only on first row, from second row the textbox is appearing without mask.
here is my code :
<Columns>
<asp:TemplateField HeaderText="Qty">
<ItemTemplate>
<asp:TextBox ID="txtQuan" runat="server" ValidationGroup="MKE" MaxLength="5"
style="text-align:right" width="100px" Text='<%# BIND("QUAN") %>' />
<ajaxToolkit:MaskedEditExtender ID="txtQuan_MaskedEditExtender" runat="server"
Enabled="True" Mask="99999" TargetControlID="txtQuan" />
</ItemTemplate>
</asp:TemplateField>
Reason is that When Gridview Render row each Row contain textbox with deffferent autogenerated id and you are given a fixed name in TargetControlID Property in MaskEditExtender . so you need to use RowDataBound Event to Put MaskEditExtender in each textbox....
using AjaxControlToolkit; protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
TextBox txt = (TextBox)e.Row.FindControl("txtQuan");
MaskedEditExtender mxt = (MaskedEditExtender)e.Row.FindControl("MaskedEditExtender1");
mxt.TargetControlID = txt.ID;
}
}
I have multiple textboxes and dropdown lists within my GridView. For one particular textbox I need trigger a server event which gets data from the database and fills it in other columns of the Grid. Is there a simple way to do it or a slightly complicated way as detailed here
I have no problems implementing the above method or thinking of a work around but then thought that there is Cell Lost Focus in a grid control surprises me a little. Am I missing something ? Any help on this would appreciated.
You can set AutoPostBack to true and handle it's TextChanged event.
<asp:GridView ID="GridView1" runat="server" EmptyDataText="It's Empty.">
<Columns>
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<asp:TextBox ID="txtName"
runat="server"
Text='<%#Eval("Name") %>'
AutoPostBack="true"
OnTextChanged="NameChanged" >
</asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</GridView>
in codebehind:
protected void NameChanged(Object sender, EventArgs e)
{
var txtName = (TextBox) sender;
var row = (GridViewRow) txtName.NamingContainer;
// you could find other controls in this GridViewRow via
// row.FindControl("ControlID") in case of a TemplateField or
// row.Cells[0].Text (0 = index of column) in case of a BoundField
}
I have a repeater for showing my data . this repeater showing 2 field that one of feild is checkBox Control and other is a lable.
NOW , how can I understand text of lable when the checkBox is Checked?
I want to see text of lable in evry row that the CheckBoxes is checksd.
how do I do?
I use LINQtoSQL for get and set data from database
On postback, you need to loop through every row of your repeater, and grab out the checkbox control. Then you can access it's .Checked and .Text properties. If it's .Checked, then add it to a list or array. I can elaborate if needed..
Page...
<asp:CheckBox ID="chkBoxID" runat="server" OnCommand="doSomething_Checked" CommandArgument="<%# Some Binding Information%>"
CommandName="NameForArgument">
</asp:CheckBox>
Code Behind...
protected void doSomething_Checked(object sender, CommandEventArgs e) {
CheckBox ctrl = (CheckBox)sender;
RepeaterItem rpItem = ctrl.NamingContainer as RepeaterItem;
if (rpItem != null) {
CheckBox chkBox = (LinkButton)rpItem.FindControl("chkBoxID");
chkBox.DoSomethingHere...
}
}
<asp:Repeater ID="rptX" runat="server">
<ItemTemplate>
<asp:Label ID="lblX" runat="server" Visible='<%# Eval("IsChecked") %>' />
<asp:CheckBox ID="chkX" runat="server" Checked='<%# Eval("IsChecked") %>' />
</ItemTemplate>
</asp:Repeater>
And code behind when you assign your data
rptX.DataSource = SomeIEnumerableFromLinq; // which has a bool field called IsChecked
rptX.DataBind();