Can I call a javascript function in the RowDatabound event of the Gridview?
I am currently enabling/disabling buttons in each of my gridview rows based on a status value from the database.I need to fire a javascript function (say alert('current status')) when the status is 0,else dont fire that function.Can I achieve this in the row databound event?
I need to call a javascript funtion, on the click event of buttons(asp button or html button) in my gridviw.Also I need to pass the ID from the gridview(datakey value) as a parameter to the javascript function.
ie ,All the rows in my gridview has a button field,on clicking each of the buttons ,a javascript function is to be fired ,and the ID of that particular row from gridview(datakey value) should be passed to the javascript as a parameter.
why the gridview RowDataBound event fires during a select command. I only expect it to run when the gridview is being populated with data. Is there some way to stop it from running when the select command is triggered?
View 3 RepliesI have a web form in which I create many controls including a submit button dinamically.
I want to check a condition in the button's click event and if it comes true, call a javascript funtion to show an alert. but the problem is when I use :
Page.RegisterClientScriptBlock("ClientScript", script);
in the btn_Click event, it is not working. I guess the script should be registered at page_load.
Can I call a javascript function from a hyperlink field in gridview?I dont want to navigate to a different page,instead i need to call the javascript on clicking the hyperlink.
View 3 Repliesprotected void grdMain_RowDataBound(object sender, GridViewRowEventArgs e)
{
}
<asp:GridView ID="grdMain"
runat="server"
OnRowDataBound="grdMain_RowDataBound"
When a Gridview row is in edit, I need to default an empty textbox to today's date. I am close, but the defaulted date is is not saved to the database. I can key in the date and the date is displayed and saved to the database. Even more interesting:
1. The date is defaulted to - 5/17/2010
2. If I erase the month and key the "5" back in the data is not saved.
3. If I erase the month and then change the month to "6", the data is saved to the database. If any value is changed in the date the save works.
[Code]....
I use linq query as below and bind it to listview. I have 2 label control (name,remain).I want to check in code behind if p.count<200 then remain ="Sample text1"if price <300 then "sample text2".I know that I could do it before linq in gridview RowDataBound event
Dim prod= From p In db.products _
Select New With {p.name p.category, p.count}
postlist.DataSource = prod
postlist.DataBind()
How to get the DataKey value in RowDataBound event for GridView
View 3 RepliesI have a very simple asp.net page, just some buttons and one GridView on it. The logic is a user click the QUery button,then the button click event was trigured to populate the gridview with data queried from database via LINQ. for a user friendly interface, in RowDataBound event, I visit every row, change a boolean value into checkbox represention. But it seem that the RowDataBound run twice, because the checkboxs were inserted twice for every row in one cell. so why? the source code snippet as follow:
protected void btnSelect_Click(object sender, EventArgs e)
{
RetiredEmployeeDataContext db = new RetiredEmployeeDataContext();
GridView1.DataSource = db.ENTUserAccountSelectAll();//userAccounts;
GridView1.DataBind();
}
protected void GridView1_OnRowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
CheckBox chkActive = new CheckBox();
chkActive.Checked = ((ENTUserAccount)e.Row.DataItem).IsActive;
chkActive.Enabled = false;
e.Row.Cells[5].Controls.Add(chkActive);
}
}
I am NOT formatting at DECLARATIVE time
The following code works perfectly
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Can I directly format e.RowDataItem.
I don't want to format by using e.Row.Cells[4].Text
Why wasn't my GridView's RowDataBound event fired? I have a masterpage on whick i have a query button, and I have a content page on which i have a customized GridView(named cgvEmployees,derived from GridView). The logic is when user click the button, the button click event triggered that search the underlying database and populate the GridView.
Everything runs great except that RowDataBound event isn't triggered. Because I have to change some cells' representations in RowDataBound event handler. I have surfed so much pages to find the answer but failed. Below is what i have already done:
1. set the autoeventwireup to true;
2. i have a cgvEmployees.bind() sentence in the button click event handler;
3. i have OnRowDataBound="cgvEmployees_OnRowDataBound" in the content page GridView tag attribute
by the way, the database query is coded by Linq Dynamic Query (please google 'dynamic Linq').
void Master_QueryButton_Click(object sender, EventArgs e)
{
RetiredEmployeeDataContext db = new RetiredEmployeeDataContext();
NameValueCollection nvcQueryKeyValue = getNVCQueryKeyValue();
Expression<Func<RetiredEmployee, bool>> searchPredicate = getLambdaExpr(nvcQueryKeyValue);
IQueryable<RetiredEmployee> retireds = db.RetiredEmployees;
Expression expr = Expression.Call(typeof(Queryable), "Where",
new Type[] { typeof(RetiredEmployee) }, Expression.Constant(retireds), searchPredicate);
IQueryable<RetiredEmployee> query = db.RetiredEmployees.AsQueryable().Provider.CreateQuery<RetiredEmployee>(expr);
List<RetiredEmployee> employeeList = new List<RetiredEmployee>(query);
List<RetiredEmployeeEO> employees = new List<RetiredEmployeeEO>();
foreach (RetiredEmployee employee in employeeList)
{
RetiredEmployeeEO employeeEO = new RetiredEmployeeEO();
employeeEO.MapEntityToProperties(employee);
employees.Add(employeeEO);
}
cgvEmployees1.ListClassName = typeof(RetiredEmployeeEOList).AssemblyQualifiedName;
cgvEmployees1.LoadMethodName = "LoadFromQuery";
cgvEmployees1.LoadMethodParameters.Clear();
cgvEmployees1.LoadMethodParameters.Add(employees);
cgvEmployees1.DataBind();
}
protected void cgvEmployees1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
//Add the edit link to the action column.
HyperLink editLink = new HyperLink();
if (((BasePage)this.Page).ReadOnly)
{
editLink.Text = "View";
}
else
{
editLink.Text = "Edit";
}
editLink.NavigateUrl = "employee.aspx" + EncryptQueryString("id=" + ((RetiredEmployeeEO)e.Row.DataItem).ID.ToString());
if(e.Row.Cells[0].Controls.Count==0)
e.Row.Cells[0].Controls.Add(editLink);
//Add checkbox to display the isactive field.
CheckBox chkActive = new CheckBox();
chkActive.Checked = ((RetiredEmployeeEO)e.Row.DataItem).liveOrDead;
chkActive.Enabled = false;
if(e.Row.Cells[24].Controls.Count==0)
e.Row.Cells[24].Controls.Add(chkActive);
if (((RetiredEmployeeEO)e.Row.DataItem).gender.Equals((byte)1))
e.Row.Cells[2].Text = "Male";
else
e.Row.Cells[2].Text = "Female";
if (((RetiredEmployeeEO)e.Row.DataItem).retiredOr.Equals((byte)1))
e.Row.Cells[14].Text = "Retired1";
else
e.Row.Cells[14].Text = "Retired2";
if (((RetiredEmployeeEO)e.Row.DataItem).birthday.Equals("1753-01-01"))
e.Row.Cells[3].Text = "";
if (((RetiredEmployeeEO)e.Row.DataItem).dayToEmployed.Equals("1753-01-01"))
e.Row.Cells[6].Text = "";
if (((RetiredEmployeeEO)e.Row.DataItem).dayRetired.Equals("1753-01-01"))
e.Row.Cells[7].Text = "";
if (((RetiredEmployeeEO)e.Row.DataItem).dayParty.Equals("1753-01-01"))
e.Row.Cells[13].Text = "";
if (((RetiredEmployeeEO)e.Row.DataItem).daytoassign.Equals("1753-01-01"))
e.Row.Cells[17].Text = "";
}
}
How do I access GridView Page Index in RowDataBound event? I am assigning PageIndex to hyperlink on the gridview, for this I was planning to use "GridView1.PageIndex" in rowdatabound event. Problem is when I got second page in gridview (10 rows per page), the first row in the page shows page index as "0" and from second row it becomes 1. And if I goto third page, the first row in the page shows page index as "1" and from second row it becomes 2.
View 13 RepliesI have a Gridview with edit and update feature enabled. It displays the data correctly but when I click on the Edit linkbutton(to edit the data), I get the error "Object reference not set to an instance of an object".
I tried debugging and found that the row which I click (say editindex is 1) loses its value. I could identify this while debugging the code, when the code flow moves to the rowdatabound event, the label (or for that matter any control in the rowdatabound event) shows a null value and eventually errors out.
I am unable to figure out as to why the control specified in the rowdatabound event loses its value when editing. Note: The lost valueow data is the one which I tried editing.
I am attaching the code which I have written for the rowdatabound event.
[Code]....
i need to know if this can be done :
i have a grid form with 3 fields field1 & field2 & field3.
in the insert statement the field 3 gets a javascript function result that uses filed1 & 2 values.
Now what i want in the grid view update statement is : to call the @field 1 & @field2 from the update statement to a similar javascript function..(do soem calculation ) and then re-assign the java function result to the @field3 variable in the update statement..
(//// Or simply what i want is to do the same calcultions onthe fields while perfoming an update operation.. //).
how can i perfom the calculations in a grid view update statament ..
I want to have a total in the gridview footer of the duration of the employees. As the rowdatabound goes through the cycles I can see it reading the correct times from each row but it is not totalling in totalTime and I get 0:00:00 in the footer.
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How to generate "Gridview1.row_bound" event in gridview?
View 1 RepliesI have database status field Bit(0/1) this values binding to gridview column. i want to show record status instead of 0 and 1 display open or close
View 5 RepliesI have a page on which everything is loaded dynamically.
There is a Gridview (AutoGenerateColumns=true) and in the RowDataBound I check every column for a boolean datatype. If found I add a checkbox (autopostback=true) to the cell and register the CheckedChanged event.
The problem is, that I only get the CheckedChanged event, if I reload the grid in Page_Load:
protected void Page_Load(object sender, EventArgs e) {
LoadGrid();
}
But this is very expensive and causes that the db request will be executed twice. If I changed the code to what I want:
protected void Page_Load(object sender, EventArgs e) {
if (!this.IsPostBack)
loadGrid();
}
I get no CheckedChanged event.
Is there a possibility to get:
- Adding a Checkbox in RowDataBound
- Only "LoadGrid()" if it is no PostBack
- Getting the CheckedChanged event of the relevant row
I know the way how to find the value of a control in gridview RowDataBound()
as
<asp:Label ID="ControlId" runat="server" Text='<%#Eval("Field") %>'></asp:Label>
in RowDataBound() i can access the value as
Label lbl= (Label)e.Row.FindControl("ControlId");
But ,I want to access the value in gridview RowDataBound()
as
var value=eval("Field")
Is there any way doing like this ....
I have a Master/Slave GrisViews or some say Parent/Child GridViews.
i want to set my button visible=false in the child gridview if data is not exist.
i try this:
Protected Sub gv_child_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs)
If e.Row.RowType = DataControlRowType.DataRow Then
e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#FFC080';")
e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='';")
Dim lblitemid As Label = CType(e.Row.Cells(1).Controls(1), Label)
Dim lblphoto As Label = CType(e.Row.Cells(11).Controls(1), Label)
[Code]......
but it does not working. the button is still there.
On Row databound i want to show some rows in If and Hide in some rows in else conditon. But it generate an exception that (Index was out of range. Must be non-negative and less than the size of the collection Parameter name: index.
protected void gvHotels_RowDataBound(object sender, GridViewRowEventArgs e)
{
DataTable dt = new DataTable();
if (e.Row.RowType == DataControlRowType.DataRow)
[code]...
I have a gridview, I would like to call an event gridview rowdatabound on button click, but in gridview are edittemplate that uses textbox.
Is when I can call event RowDataBound on button click, edittemplate value in gridview can calculate?
here's my code
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) {
decimal d1 = 0, d1e = 0, d2e = 0, d3e = 0, d4e = 0, d5e = 0, d6e = 0, d7e = 0, d8e = 0;
decimal d1f = 0, d2f = 0, d3f = 0, d4f = 0, d5f = 0, d6f = 0, d7f = 0, d8f = 0;
decimal tv = 0;
decimal harga = 0;
decimal totalval = 0;
[CODE]
Getting error calling Javsscript function from another Javascript function
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I have a gridview being loaded via a Databind to a MembershipUserCollection
This works fine, but I need to add one more Column with data not found in the collection, so i added a TemplateField and a Label to my Gridview and in the TEXT prop of the label is where my problem is.
The function call is working, but my problem lies with providing the Datafield="UserName" value from the same row in GridView in the function call
This is my HTML for the GridView:
[Code]....