Forms Data Controls :: Refreshing Form GridView With Button_Click?
Mar 4, 2011
I am new to asp.net development and I have a employee Web form that is part of a larger wesite. The webform uses a Gridview control which receives data via SQL Server tables so the web form has a SqlDataSource ID="SqlDataSource1" defined. When the page loads, the connection string automatically populates the rows of the gridview (which is a all employees).
I am attempting to create a customized sub search wherein the user can reduce the search to one person by providing either firstname or lastname, department etc within a textbox and then selecting the same from a dropdown list. Finally the user clicks the submit button (which is onclick in codebehind).
When I try to do the above I get "System.InvalidOperationException: Both DataSource and DataSourceID are defined on 'GridView1'. Remove one definition." It seems that once I define the DataSource and DataSourceID in the form, it is illegal for me to do it again in the codebehind. Is there a way to refresh the Gridview that I already have with code from a button_click. I have code attached.
[Code]....
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May 14, 2010
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Jan 20, 2010
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[Code]....
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Jun 26, 2010
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Here is my ASPX:
[Code]....
Here is my C#
[Code]....
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Aspx:
[Code]....
Code behind:
[Code]....
Why doesn't databind() work until I refresh the page?
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[Code]....
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Jan 17, 2011
I have something like this:
[Code]....
[Code]....
This does NOT work. What's wrong here?How do I accomplish my goal? I MUST use the Button1_Click event for this one.
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May 25, 2010
i have one datalist and i have taken textbox in headerTemplate of DataList.
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[Code]....
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Jan 12, 2011
I successfully bind ListView DataSourceID to ObjectDataSource but it binds only initially on Page_Load event.
When I want to bind another data through a Button_Click event, the new data doesn't bind.
aspx code:
[Code]....
Codebehind:
[Code]....
On Page_Load, I get result:
A1
<hr />
T1
A2
<hr />
T2
A3
<hr />
T3
When I Button1_Click, nothing happens, no error, no any more results and _airLineData is 53 records, not 3 records (A1T1 to A3T3) I want the binding to be with DataSourceID to ObjectDataSource (not through DataSource property and control.DataBind() method)
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Mar 24, 2011
I am searching for a customer and displaying results on the same form. Now for some reason even If I am searching using correct format of the data the system is showing some predefined error messages. This measn that my previous error message is not refreshing.
This is the code:
if (txtANumber.Text.Length == 0 && txtBNumber.Text.Length == 0 && txtCNumber.Text.Length == 0 && txtDNumber.Text.Length == 0 && txtLastName.Text.Length == 0 && txtFirstName.Text.Length == 0 && txtDOB.Text.Length == 0)
{
GridViewCustomers.DataSource = null;
GridViewCustomers.DataBind();
lblNoResultsMsg.Text = "Please enter search details";
lblNoResultsMsg.Visible = true;
valid=false;
}
else
{
if (errors== 0)
{
GridViewCustomers.DataSource = null;
GridViewCustomers.DataBind();
lblNoResultsMsg.Text = "Please enter correct format of A Number ";
lblNoResultsMsg.Visible = true;
valid = false;
}
else if (errors== 2)
{
GridViewCustomers.DataSource = null;
GridViewCustomers.DataBind();
lblNoResultsMsg.Text = "Please enter correct format of B Number ";
lblNoResultsMsg.Visible = true;
valid=false;
}
else if (errors== 3)
{
GridViewCustomers.DataSource = null;
GridViewCustomers.DataBind();
lblNoResultsMsg.Text = "Please enter correct format of C Number ";
lblNoResultsMsg.Visible = true;
valid=false;
}
else if (errors == 4)
{
GridViewCustomers.DataSource = null;
GridViewCustomers.DataBind();
lblNoResultsMsg.Text = "Please enter correct format of Date of Birth ";
lblNoResultsMsg.Visible = true;
valid = false;
}
else if (errors == 5)
{
GridViewCustomers.DataSource = null;
GridViewCustomers.DataBind();
lblNoResultsMsg.Text = "You need to search by FirstName LastName and DOB ";
lblNoResultsMsg.Visible = true;
valid = false;
}
else if (errors == 6)
{
GridViewCustomers.DataSource = null;
GridViewCustomers.DataBind();
lblNoResultsMsg.Text = "Try Again";
lblNoResultsMsg.Visible = true;
valid = false;
}
else
{
valid = true;
}
}
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Sep 17, 2012
I am refreshing my gridview every 10 sec using update panel and Timer control.
In timer control i have:
protected void Timer1_Tick(object sender, EventArgs e){gv1.DataBind();}
Now i have a checkbox column in the gridview, and select all checkbox also, for functionality of checkboxes i am using javascript like what is explained by this article: [URL] ....
I like this way its simple and fast. but now when gridview refreshes the checkbox selection and others styles disappears.
Now what can i do to keep my selection as it is on gridview refresh. Do i have to stop the gridview refresh on checkbox selection?
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Nov 16, 2010
I want to be able to show the record that was just inserted after add_button_click event. I run the insert from mycommand and then set mycommand2 to run the read to populate a details view. I have a feeling I am going about this the wrong way. The insert fires correctly but the details view does not populate.
[Code]....
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May 4, 2010
Currently I have something like this, but when I click "update" the record doesn't get updated (but no error is returned).
[Code]....
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Mar 3, 2011
I have a aspx page which is searching for items from database. If I search for something and find them and then try to search something else, it is still showing the old entry. It does not even tell me whether it has found anything or not like it should.
My code is:
protected void Page_Load(object sender, EventArgs e)
{
txtName.Focus();[code]....
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