I have three dropdownlist in gridview's template field. If the first dropdownlist has selected value in it then i am populating the other two dropdownlist with an array of listitem. Both the dropdownlist will have same items in them.
Suppose I have dropdown named ddlone, ddltwo, ddlthree. If ddlone has a selectedvalue then according to the selectedvalue of ddlone I am adding items in ddltwo and dllthree. They both have same list of items. The problem is when I set the selectedindex or selectedvalue of either ddltwo or ddlthree then both get the same index or values I don't know how.
Here is my gridview:
<asp:GridView ID="GridView1" runat="server"
AutoGenerateColumns="false" OnRowDataBound="gridview_RowDataBound">
<HeaderStyle HorizontalAlign="Left" />
<Columns>
<asp:BoundField HeaderText="SrNo" DataField="SrNo" />
<asp:TemplateField HeaderText="ONE">
<ItemTemplate>
<asp:DropDownList ID="ddlone" runat="server" AutoPostBack="True"
OnSelectedIndexChanged="ddlone_SelectedIndexChanged">
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Two">
<ItemTemplate>
<asp:DropDownList ID="ddltwo" runat="server">
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Three">
<ItemTemplate>
<asp:DropDownList ID="ddlthree" runat="server">
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Add">
<ItemTemplate>
<asp:LinkButton ID="lnkAddon" runat="server" Text="+"
Font-Underline="false">
</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
All this is being done in gridview_rowdatabound event here is my code:
ddlone.SelectedValue = value_one;
items = GetItems(value_one);
ddltwo.Items.Clear(); ddlthree.Items.Clear();
foreach (ListItem it in items)
{
ddlopen.Items.Add(it); ddlclose.Items.Add(it);
}
if (!string.IsNullOrEmpty(value_two)) ddltwo.SelectedValue = value_two;
if (!string.IsNullOrEmpty(value_three)) ddlthree.SelectedValue = value_three;
When the second last statement is executed the value of ddltwo and ddlthree becomes same. When the last statement is executed the selecetedvalue of ddltwo and ddlthree becomes same.
I tried making a copy of items but still the problem persists.
Related
I have a ajaxtoolkit combobox inside a gridview and it works perfectly, but the problem is when I click the dropdown button the list overlaps the page so I want to limit the number to be displayed to 10 items per scroll. Next problem is when I try to add an update panel to the page, It destroys the rendering of the combobox. How can I solve this? Thanks in advance
here is my code for the combobox inside the gridview
<asp:GridView CssClass="pad" ID="dgvOrder" runat="server" BorderStyle="Double" AutoGenerateColumns="False" OnRowDataBound="dgvOrder_RowDataBound" OnRowDeleting="dgvOrder_RowDeleting" HorizontalAlign="Center" >
<Columns>
<asp:TemplateField HeaderText="No." AccessibleHeaderText="No.">
<ItemTemplate>
<%# Container.DataItemIndex + 1 %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText ="Description" AccessibleHeaderText="Description">
<ItemTemplate >
<ajaxToolkit:ComboBox ID="ddlItems" AutoPostBack="True" AppendDataBoundItems="True" onmouseover="this.size=4;" onmouseout="this.size=1;" DataTextField="item_desc" DataValueField="item_id" runat="server" AutoCompleteMode="Suggest" ItemInsertLocation="Prepend" OnSelectedIndexChanged="ddlItems_SelectedIndexChanged" DropDownStyle="DropDown" BorderStyle="Double" ></ajaxToolkit:ComboBox> <br />
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="Please pick an item" ControlToValidate="ddlItems"></asp:RequiredFieldValidator>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField AccessibleHeaderText="Inventory Code" HeaderText="Inventory Code">
<ItemTemplate>
<asp:Label ID="lblInvCode" runat="server" Text=""></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField AccessibleHeaderText="Qty" HeaderText="Qty">
<ItemTemplate>
<asp:TextBox ID="txtQty" runat="server" OnTextChanged="txtQty_TextChanged" AutoPostBack="True" onkeyup ="ValidateText(this);"></asp:TextBox><br />
<asp:RequiredFieldValidator ID="RequiredFieldValidator23" runat="server" ErrorMessage="Please input qty" ControlToValidate="txtQty"></asp:RequiredFieldValidator>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField AccessibleHeaderText="UOM" HeaderText="UOM">
<ItemTemplate>
<asp:Label ID="lblUOM" runat="server" Text=""></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField AccessibleHeaderText="SOQ" HeaderText="SOQ">
<ItemTemplate>
<asp:Label ID="lblSOQ" runat="server" Text=""></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField AccessibleHeaderText="Reason" HeaderText="Reason">
<ItemTemplate>
<asp:TextBox ID="txtReason" runat="server" Enabled="False"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowDeleteButton="True" />
</Columns>
</asp:GridView>
and here is my code for the updatepanel
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
</ContentTemplate>
<Triggers>
(whole page inside)
<asp:AsyncPostBackTrigger ControlID="btnSearch" EventName="Click" />
<asp:AsyncPostBackTrigger ControlID="txtIdNo" EventName="TextChanged" />
</Triggers>
</asp:UpdatePanel>
Long Item Lists / Multiple Input Controls
All of the items in a ComboBox's list will be rendered to the web page it exists in. The AutoCompleteExtender, on the other hand, retrieves items from its ServiceMethod after the page is rendered. When your ComboBox contains a rather long list of items, or when you have a relatively large number of ComboBoxes on the same page (or within the same UpdatePanel), load times could be slowed down significantly. When ComboBoxes perform slowly because of the amount of markup they must render to the browser, an AutoCompleteExtender can be used instead to increase performance.
<ajaxToolkit:ComboBox ID="ComboBox1" runat="server"
DropDownStyle="DropDown"
AutoCompleteMode="None"
CaseSensitive="false"
RenderMode="Inline"
ItemInsertLocation="Append"
ListItemHoverCssClass="ComboBoxListItemHover"
<asp:ListItem>...</asp:ListIem>
...
For more information your can look it in this link.
Im working on one small project.Using Datagrid in that
<asp:DataGrid ID="dgShowTiming"
runat="server"
AutoGenerateColumns="false"
OnItemCreated="dgShowTiming_ItemCreated">
<Columns>
<asp:TemplateColumn HeaderText="HOUR">
<ItemTemplate>
<asp:DropDownList ID="ddlShowTimingsHours"
runat="server"
CssClass="field1"
DataSource="<%#Hour()%>"
DataTextField="Hours"
DataValueField="Hours">
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="MINUTE">
<ItemTemplate>
<asp:DropDownList ID="ddlShowTimingsminutes"
runat="server"
CssClass="field1"
DataSource="<%#Minute()%>"
DataTextField="Minutes"
DataValueField="Minutes">
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="AM/PM">
<ItemTemplate>
<asp:DropDownList ID="ddlShowTimingAMPM"
runat="server"
CssClass="field1"
onchange="GetCountryDetails()">
<asp:ListItem>AM</asp:ListItem>
<asp:ListItem>PM</asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Description">
<ItemTemplate>
<asp:DropDownList ID="ddlShowTimingDescription"
runat="server"
DataSource="<%#Description()%>"
DataTextField="ShowTimeDesc"
DataValueField="ShowTimeDescID"
CssClass="field1">
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Tax Details">
<ItemTemplate>
<asp:Label ID="lblRowID"
runat="Server"
Text="View"
Style="cursor: pointer;"
onclick="FilmTaxDetailsOpen(this);"></asp:Label>
</ItemTemplate>
</asp:TemplateColumn>
</Columns>
</asp:DataGrid>
So Now My problem in this Grid is i have to on selectedindexchange value of dropdown ddlShowTimingAMPM i want to change the description as NOON or morning or evening..Problem im facing is how to fetch the values of 3 dropdownlist selected , based on that only im changing the description.
try this 100% working and tested
Once you Find row then from that row you can find all Controls inside that row. You can same apply for other DropDownList and set AutoPostBack="true" for all DropDownList
protected void ddlShowTimingsHours_OnSelectedIndexChanged(object sender, EventArgs e)
{
DataGridItem item = (DataGridItem)((DropDownList)sender).Parent.Parent;
DropDownList ddlShowTimingsHours = (DropDownList)item.FindControl("ddlShowTimingsHours");
DropDownList ddlShowTimingsminutes= (DropDownList)item.FindControl("ddlShowTimingsminutes");
DropDownList ddlShowTimingAMPM= (DropDownList)item.FindControl("ddlShowTimingAMPM");
}
I have a gridview which contains images (populated dynamically from database) and dropdownlist which contains two values. First column contains checkbox. I want to insert selected checkbox's images and dropdown values to a new table on button click. What may be the suitable way?
Here is the grid view:
<asp:GridView ID="gvDetails" runat="server" AutoGenerateColumns="false" AllowPaging="true"
EmptyDataText="No images found" OnPageIndexChanging="gvDetails_PageIndexChanging" PageSize="5">
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="true" OnCheckedChanged="CheckUncheckAll"/>
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID ="CheckBox2" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Image">
<ItemTemplate>
<asp:Image ID="imgPreview" ImageUrl='<%#
"ImageHandler.ashx?imgID="+ Eval("ID") %>' runat="server"
Height="80px" Width="80px" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Dropdown" ItemStyle-Width="50px">
<ItemTemplate>
<asp:DropDownList ID="dpdListEstatus" runat="server" OnSelectedIndexChanged="dpdListEstatus_SelectedIndexChanged" AutoPostBack="true">
<asp:ListItem>A</asp:ListItem>
<asp:ListItem>B</asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
Loop with gridview rows
Find for the checkbox control
Check if its Checked property is true
If yes, call insert statement
Set the values you want to get from image and dropdownlist. Of course you need to use findcontrol on it too.
Dim cbSelect As CheckBox, imgToInsert As Image, ddlStatus As DropDownList
For Each r As GridViewRow In gvDetails.Rows
cbSelect = r.Cells(0).FindControl("CheckBox2")
If cbSelect.Checked Then
imgToInsert = r.Cells(1).FindControl("imgPreview")
ddlStatus = r.Cells(2).FindControl("dpdListEstatus")
'Insert statement goes here...
End If
Next r
I have binded a grid with List (temporary list),
how can I pick the list text into controls text in item template in grid view.
aspx
<asp:GridView ID="gvDenomination" runat="server">
<Columns>
<asp:TemplateField HeaderText="Value">
<ItemTemplate>
<asp:Label ID="lblValue" runat="server" Text='<%#Eval("lstdenomination") %>'> </asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Delete">
<ItemTemplate>
<asp:LinkButton runat="server">Delete</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
CodeBehind
stdenomination.Add(Convert.ToInt32(txtDenomination.Text));
gvDenomination.DataSource = lstdenomination;
gvDenomination.DataBind();
If I get you, lstdenomination is a List<int>. You can do this
<asp:TemplateField HeaderText="Value">
<ItemTemplate>
<asp:Label ID="lblValue" runat="server" Text='<%# Container.DataItem %>'> </asp:Label>
</ItemTemplate>
</asp:TemplateField>
An event bound to a DropDownList in a standalone GridView obviously would work in this fashion , but things are bit more complicated in this scenario.
The event does not fire for the DropDownList. What's interesting is the event bound to the Button Does fire. Not sure what the difference would be between the DropDownList and TextBox.
I've tried both OnSelectedIndexChanged and OnTextChanged - neither work.
The nesting is as follows:
GridView A
Ajax Accordion
GridView B (With DropDownList)
<AjaxToolkit:AccordionPane ID="AccordionPane1" runat="server">
<Header>
</Header>
<Content>
<asp:GridView runat="server" ID="gv" AutoGenerateColumns="false"
BorderWidth="0" AlternatingRowStyle-BorderStyle="None" ShowFooter="true">
<Columns>
<asp:TemplateField HeaderText="Id">
<ItemTemplate>
<asp:Label runat="server" ID="lblId" Text='<%# Eval("Id") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Type">
<ItemTemplate>
<asp:Label runat="server" ID="lblType"></asp:Label>
</ItemTemplate>
<FooterTemplate>
<asp:DropDownList runat="server" ID="ddlType" OnTextChanged="ddlType_SelectedIndexChanged"
AutoPostBack="true">
</asp:DropDownList>
<asp:Button runat="server" ID="btnTest" OnClick="btnTest_Click" Text="TEST" />
</FooterTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</Content>
Thank you!
UPDATE
Turns out this had nothing to do with the nested GridViews or Accordion.
After adding the following, the event now successfully fires:
if (!Page.IsPostBack)
Populate(object);
Turns out this had nothing to do with the nested GridViews or Accordion.
After adding the following, the event now successfully fires:
if (!Page.IsPostBack)
Populate(obj);