I have GridView with 2 columns.
The first column is: test-label (TemplateField)
The second: checkbox (asp:CheckBoxField) that connect to sql table with bit column (done).
I want that on page load - the page will check every row, where the checkbox = true, the test-label.visble will be false.
I know how to write code with SELECT statement to check the value from the SQL table, but don't know how to check every row on the gridview on the page-load.
how can I do that?
(i can't use findcontroll for the checkbox because it's checkboxfield and not just "checkbox".
<asp:CheckBoxField DataField="done" SortExpression="done" HeaderText="done?" />
so, what can I do here? maybe to replace that field with regular cb? (i don't know how to do there databind - on the regular cb).
you can use GridView.RowDataBound Event
so you can do something like
protected void GVRowDataBound(object sender, GridViewRowEventArgs e)
{
var check = (CheckBox) e.Row.FindControl("ID"); // ID is id of the checkbox
var lable = (Label) e.Row.FindControl("LableID");
if(check != null && lable != null)
{
if(check.Checked)
{
lable.Visible = false;
}
}
}
You can't do it in Page.Load because the GridView isn't databound yet.
Try handling GridView.RowDataBound.
Code:
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
CheckBox cb = (CheckBox)e.Row.FindControl("checkbox");
Label lbl = (Label)e.Row.FindControl("test-label");
lbl.Visible = !(cb.Checked);
}
}
Related
I am creating the dynamic grid and adding textbox and label in row dynamically on some button click and bind some data from the database to textbox and label.I want to change the label text color and text box read only for condition depend on database.i have used onRowDataBound event of gridview but not getting any value in the textbox and label for a row. Can anyone helps me to solve this issue? Thanks
protected void grdMasterData_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Label status = e.Row.FindControl("lblProduct") as Label;
if (status.Text == "LY Actuals")
{
e.Row.Cells[0].CssClass = "lblProductColor";
// lbtAction.Visible = false;
}
}
}
In RowDataBound three row types provided by grid, you are using only DataRow, try to get your values from empty row and footer row because first record will not come in DataRow.
I hide my columns using the solution in following link
How to hide a TemplateField column in a GridView
However this causes problems with update operations, as gridview acts as hidden rows has null value. So how to hide columns after databind?
protected void begv_OrderDetail_RowCreated(object sender, GridViewRowEventArgs e)
{
((DataControlField)begv_OrderDetail.Columns.Cast<DataControlField>().Where(fld => fld.HeaderText == "FileNo").SingleOrDefault()).Visible = "False";
}
Try this,
grid1.Columns[columnIndex].Visible= false;
Edit based on comment of questioner, for getting values of hidden columns
You can use hidden fields to store column wise values. This article has example that will help how to use hidden fields.
Instead of hiding column you can put the data of columns in datakeynames and later access those values. This will be useful in grabbing how to use DataKeyNames. By this method you may need to pass the id from data key names and get the record.
try this example, (i don't speak english)
into RowDataBound ...
protected void gvTeste_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
teste listaTeste = e.Row.DataItem as ListaTeste;
if (listaTeste.ID == 0)
{
e.Row.Cells[2].Text = "Não Atribuido";
}
if (e.Row.Cells[7].Text == "01/01/0001" || e.Row.Cells[8].Text == "01/01/0001")
{
**e.Row.Visible = false;** // disable row
}
}
}
I have a datagridview which is loaded through a strored procedure. It has an ID column which i want to hide it but still access its value. I set the dataKeyNames and i have a method
protected void grdTime_OnDataBound(object sender,EventArgs e)
{
grdTime.Columns[1].Visible = false;
}
which i am trying to hide this column but i get the following error. If i remove the line inside the method it works. Here is the error.
Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
Try this code in the method and then check..
grdTime.Columns[0].Visible = false;
hide the column in Row_Created event
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
e.Row.Cells[1].CssClass = "hiddencol";
//e.Row.Cells[2].CssClass = "hiddencol";
}
else if (e.Row.RowType == DataControlRowType.Header)
{
e.Row.Cells[1].CssClass = "hiddencol";
//e.Row.Cells[2].CssClass = "hiddencol";
}
}
here hiddencol is a css class
.hiddencol
{
display:none;
}
in the above code i'm hiding second column of my grid
If you've set GridView's AutoGenerateColumns to true(default), the Columns-Collection is empty. Following should work then:
1.)
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
e.Row.Cells[0].Visible = false;
}
2.)
foreach (TableRow row in GridView1.Controls[0].Controls)
{
row.Cells[0].Visible = false;
}
you can use like this in gridview tag on .aspx page
<Columns>
<asp:BoundField HeaderText="Merchandise Id" DataField="MerchandiseId" Visible="false" /></columns>
I have a gridview that should be editable when a row is clicked. This gridview is clickable in a row so when I clicked it, the row will be displayed in other pages for editing reason. I got an error like this
Specified argument was out of the range of valid values.
Parameter name: index.
This is happening for this line:
LinkButton _singleClickButton = (LinkButton)e.Row.Cells[1].Controls[1];
How can I fix this?
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
// Get reference to button field in the gridview.
LinkButton _singleClickButton = (LinkButton)e.Row.Cells[1].Controls[1];
string _jsSingle = ClientScript.GetPostBackClientHyperlink(_singleClickButton, "Select$" + e.Row.RowIndex);
e.Row.Style["cursor"] = "hand";
e.Row.Attributes["onclick"] = _jsSingle;
}
}
}
You should be using something like e.Row.FindControl("linkbuttonid"). This will get you the required link button from the current row, then you can attach your handlers to the same and perform your logic
The process I am doing is if lbl.Text is "Validated" then disable the checkbox accordingly in grid. The code works fine if paging is not there.
Now the problem is I am using paging and when I click to the next page of grid
the validated things appear with the checkbox enabled.
I checked through breakpoints. Its loading the previous gridpage values during page load event. And after pageloadevent its going design and loads the new values in grid.
//-------loading previous page values of grid here---------
protected void Page_Load(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
Label lbl = (Label)row.FindControl("Labely8");
Label Label23 = (Label)row.FindControl("Label23");
CheckBox checkbox = (CheckBox)row.FindControl("chkRows");
if (lbl.Text == "Validated")
{
checkbox.Enabled = false;
}
else
{
checkbox.Enabled = true;
}
}
}
I think you need to do enable or disable each of the checkboxes individually in the GridView.RowDataBound event rather than all at once in the Page_Load event:
void GridView1_RowDataBound(Object sender, GridViewRowEventArgs e)
{
if(e.Row.RowType == DataControlRowType.DataRow)
{
CheckBox checkbox = (CheckBox)e.Row.FindControl("chkRows");
checkbox.Enabled = e.Row.Cells["nameOfCellWithLabel"].Text == "Validated";
}
}