How can I set in my button_Click event, visibility of button in gridView to false?
All the time it give me an error:Compilation Error
Compiler Error Message: CS0103: The name 'btnTest' does not exist in the current context
<asp:GridView ID="GridView1" runat="server" OnRowDataBound="GridView2_RowDataBound">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="Button189" OnClick="Button189_Click" runat="server" Text="odzemi svez vrganj" />
<asp:Button ID="btnTest" runat="server" CommandName="odzemi" CssClass="button2" OnClick="btnTest_Click" Text="-" Width="100px" Font-Bold="True" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
Following is my button event from where i want to hide button inside gridview.
protected void Button10_Click(object sender, EventArgs e)
{
btnTest.Visible = true;
Button189.Visible = false;
}
Use following code to set button visible property to True or False . The Button in gridview which will be clicked will act as sender. Doing so will give you the row id where the button is fired from and then you can find other controls and set your desired property on that particular row.
protected void Button189_Click(object sender, EventArgs e)
{
Button Btn = sender as Button;
GridViewRow gvRow = Btn.NamingContainer as GridViewRow;
int rowId = gvRow.RowIndex;
Button Button189 = GridView2.Rows[rowId].FindControl("Button189") as Button;
Button btnTest = GridView2.Rows[rowId].FindControl("btnTest") as Button;
Button189.Visible = false;
btnTest.Visible = true;
}
You need to loop through the gridview rows and find the control
foreach (GridViewRow row in grid.Rows)
{
if(row.RowType == DataControlRowType.DataRow)
{
var control = ((Button)row.FindControl("btnTest"));
if (control != NULL)
{
((Button)control).Visible = false;
}
}
}
Related
I am working on a project where I am creating a dashboard for the Admin.
I have a UsersGridView which displays the data of the registered users in it.
Using the Template field for the Gridview I have created a button for that allows the Admin to with Lockout or Enable the user's to use the system.
<asp:TemplateField HeaderText="LockoutStatus">
<ItemTemplate>
<asp:Button ID="LockoutStatus" runat="server" CausesValidation="false" CommandName="LockoutStatus" Text="Enabled"
CommandArgument='<%# Eval("Id") %>' />
</ItemTemplate>
</asp:TemplateField>
In the RowCommand event how can I change the button CssClass and text if the user is locked out from the system.
There are several ways you can change the CssClass.
With the RowDataBound event.
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
//check if the row is d datarow
if (e.Row.RowType == DataControlRowType.DataRow)
{
//cast the row back to a datarowview
DataRowView row = e.Row.DataItem as DataRowView;
//use findcontrol to locate the butotn
Button btn = e.Row.FindControl("LockoutStatus") as Button;
//change the class based on a column value
if (row["ColumnName"].ToString() == "LockedOut")
{
btn.CssClass = "ClassA";
}
}
}
Or on the aspx page with a ternary operator.
<asp:Button ID="LockoutStatus" runat="server"
CssClass='<%# Eval("ColumnName").ToString() == "LockedOut" ? "ClassA" : "ClassB" %>'
Or as you wanted in the RowCommand event. You can use the CommandSource and cast it to a Button.
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
Button btn = e.CommandSource as Button;
btn.CssClass = "ClassA";
}
I am using one aspxGridview where I used checkbox. Now I need when I check any of the row particular column value I should get in server side to complete my business logic.
Below is the gridview used:
<dx:ASPxGridView KeyFieldName="PracticeID" ID="ASPxGrd" runat="server" ClientInstanceName="grid"
ClientIDMode="AutoID" AutoGenerateColumns="false" Width="100%" OnSelectionChanged="ASPxGrd_SelectionChanged">
<Columns>
<dx:GridViewDataColumn VisibleIndex="0" Name="CheckBoxColumn">
<DataItemTemplate>
<dx:ASPxCheckBox ID="ASPxCheckBox1" runat="server" OnCheckedChanged="ASPxCheckBox1_CheckedChanged" AutoPostBack="true">
</dx:ASPxCheckBox>
</DataItemTemplate>
</dx:GridViewDataColumn>
<dx:GridViewDataColumn FieldName="PracticeName" Caption="Description" VisibleIndex="1">
<FooterTemplate>
Total:
</FooterTemplate>
</dx:GridViewDataColumn>
</dx:ASPxGridView>
I have tried to use oncheckedevent in checkbox with auto postback true and used code to get selected row like below:
protected void ASPxCheckBox1_CheckedChanged(object sender, EventArgs e)
{
ASPxGridView grid = sender as ASPxGridView;
string currentMasterKey = Convert.ToString(grid.GetMasterRowKeyValue());
}
but getting null value of grid object.
Need help.
In your example you have used DataItemTemplate, so in that case the sender will be the control which is added in that data template i.e ASPxCheckBox and you are casting it to grid bcoz of that it is getting null.
try out below snippet.
protected void ASPxCheckBox1_CheckedChanged(object sender, EventArgs e)
{
ASPxCheckBox checkBox = sender as ASPxCheckBox;
var grid = (checkBox.NamingContainer as DevExpress.Web.ASPxGridView.GridViewDataItemTemplateContainer).Grid;
string currentMasterKey = Convert.ToString(grid.GetMasterRowKeyValue());
}
I found this answer before and it's working fine like below:
for (int i = 0; i < ASPxGrd.VisibleRowCount; i++)
{
ASPxCheckBox chk = ASPxGrd.FindRowCellTemplateControl(i, null, "ASPxCheckBox1") as ASPxCheckBox;
if (chk.Checked)
{
if (i == 0)
{
practiceName = ASPxGrd.GetRowValues(i, "PracticeName").ToString();
}
}
}
using this code i am able to get selected checkbox column value.
HELP! Is it achievable to use LinkButton or Gridview_RowDeleting method to simultaneously delete a file from a DataBase and from a Folder? Below is my code using a LinkButton:
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID = "lnkDelete" Text = "Delete" OnClientClick="return confirm('Are you sure you want to delete this record?');" CommandArgument = '<%# DataBinder.Eval(Container.DataItem,"ID") %>' runat = "server" OnClick = "DeleteFile" />
</ItemTemplate>
</asp:TemplateField>
Code Behind:
protected void grdProducts_RowEditing(object sender, GridViewEditEventArgs e)
{
//Get seleted row
GridViewRow row = grdProducts.Rows[e.NewEditIndex];
//Get Id of selected product
int rowId = Convert.ToInt32(row.Cells[1].Text);
//Redirect user to Manage Products along with the selected rowId
Response.Redirect("~/Pages/Management/ManageProducts.aspx?id=" + rowId);
}
protected void DeleteFile(object sender, EventArgs e)
{
string filePath = (sender as LinkButton).CommandArgument;
File.Delete(filePath);
Response.Redirect(Request.Url.AbsoluteUri);
}
PL: I have an existing gridview and a datasource for my table.
Thank you all for your contribution. I later got the answer to this. I will like to share it with all. Just enable OnRowDeleting in your Gridview properties then use the code behind below.
protected void grdProducts_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
Image oImg = grdProducts.Rows[e.RowIndex].FindControl("ImageFile") as Image;
if (oImg != null)
{
string sUrl = oImg.ImageUrl;
File.Delete(Server.MapPath(sUrl));
grdProducts.DataBind();
}
}
}
Finally: put this TemplateField on your aspx page.
<asp:TemplateField>
<ItemTemplate>
<asp:Image ID="ImageFile" runat="server" ImageUrl='<%# Bind("Image", "Images/Products/{0}")%>' AlternateText="Picture unavailable" style="width:50px; height:40px" />
</ItemTemplate>
</asp:TemplateField>
I have following code in my application I have a gridview control insde my grid view I have radio button defined as templetefield.
<asp:View ID="View3" runat="server">
<script type = "text/javascript">
function RadioCheck(rb) {
var gv = document.getElementById("<%=grdAllPartsRequestList.ClientID%>");
var rbs = gv.getElementsByTagName("input");
var row = rb.parentNode.parentNode;
for (var i = 0; i < rbs.length; i++) {
if (rbs[i].type == "radio") {
if (rbs[i].checked && rbs[i] != rb) {
rbs[i].checked = false;
break;
}
}
}
}
</script>
<asp:TemplateField>
<ItemTemplate>
<asp:RadioButton ID="rbSelected" runat="server" AutoPostBack="True"
oncheckedchanged="rbSelected_CheckedChanged" GroupName="RequestSelection" onclick="RadioCheck(this);" />
<asp:HiddenField ID="HiddenField1" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</<asp:View>
Code Behind .CS
protected void rbSelected_CheckedChanged(object sender, EventArgs e)
{
}
Now my problem is upon running my page when I click the radio button the Event doesn't fire. oncheckedchanged is not firing.
Surprisingly The same functionality works fine in another page with in the grid view.
I have searched the web for this answers. But so far nothing worked out. I have Update Panel in my Master Page.. I have tried to play with UpdateMode="Always" and ChildrenAsTriggers="true" but so far nothing worked out please help!
Try this,
void GridView_RowDataBound(Object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType == DataControlRowType.DataRow)
{
Radiobutton rb = e.Row.FindControl("rbSelected") as Radiobutton;
rb.oncheckedchanged += this.rbSelected_CheckedChanged;
}
}
The event will be added to the radiobutton on rowdatabound event of GridView...
Hope this helps you...
I have a datapager with a pagertemplate. In the template I have a "Show All" button, which sets the PageSize of the datapager to show all records. This works fine but I want to be able to hide the button when it's clicked. It's in an UpdatePanel so I don't know if that makes a difference?
<asp:DataPager ID="Pager" runat="server" PagedControlID="rangeList" PageSize="15" EnableViewState="false">
<Fields>
<asp:TemplatePagerField>
<PagerTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CommandArgument="<%# Container.TotalRowCount.ToString() %>"
oncommand="LinkButton1_Command" >Show All Ranges</asp:LinkButton>
</PagerTemplate>
</asp:TemplatePagerField>
<asp:numericpagerfield ButtonCount="10" NextPageText="..." PreviousPageText="..." CurrentPageLabelCssClass="pageOn" />
</Fields>
</asp:DataPager>
And the codebehind:
protected void LinkButton1_Command(object sender, CommandEventArgs e)
{
this.Pager.PageSize = int.Parse(e.CommandArgument.ToString());
LinkButton lb = (LinkButton)sender;
if (lb != null)
{
lb.Visible = false;
}
rangeList.DataBind();
}
The first click works fine, and refreshes the ListView which in turn adjusts the pager to show one page with all the results on it, but the button doesn't disappear as I want it to.
Any ideas?
If there's nothing to display within the pager, why not hide the Pager control itself:
protected void LinkButton1_Command(object sender, CommandEventArgs e)
{
this.Pager.PageSize = int.Parse(e.CommandArgument.ToString());
this.Pager.Visible = false;
lnkShowPages.Visible = true; // EDIT only
rangeList.DataBind();
}
EDIT:
You could have a second "Show Pages" LinkButton that's initially not visible and becomes visible when the Show All LinkButton is clicked (above). When this new LinkButton is clicked, it could then enable paging by setting the Pager's PageSize and visibility and hiding itself:
protected void lnkShowPages_Command(object sender, CommandEventArgs e)
{
this.Pager.PageSize = int.Parse(e.CommandArgument.ToString());
this.Pager.Visible = true;
lnkShowPages.Visible = false;
rangeList.DataBind();
}