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Populate Devexpress Gridview on the selection of another gridview using sqldatsource

Posted on 2010-08-27
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Last Modified: 2012-05-10
Hi Experts,

I have a devexpress gridview bound to sqldatasource. On the selection of a row in this grid I want to pass student Matric No to second Dexexpress gridview so that it gets populate too with student data. I can get the Matric no, from the selected row but the problem I am having is to pass the selected Matric No as a parameter to the second Gridview. Any ideas how can we pass on this parameter
<dx:ASPxGridView ID="grid" runat="server" AutoGenerateColumns="False" DataSourceID="ds_Student"
                        KeyFieldName="MatricNo" ClientInstanceName="grid" OnCustomCallback="ASPxGridView1_CustomCallback">
                        <Columns>
                           <dx:GridViewCommandColumn VisibleIndex="3">
                                <SelectButton Text="select" Visible="True">
                                </SelectButton>
                            </dx:GridViewCommandColumn>
                            <dx:GridViewDataTextColumn FieldName="MatricNo" ReadOnly="True" VisibleIndex="0">
                            </dx:GridViewDataTextColumn>
                            <dx:GridViewDataTextColumn FieldName="Forename" VisibleIndex="1">
                            </dx:GridViewDataTextColumn>
                            <dx:GridViewDataTextColumn FieldName="Surname" VisibleIndex="2">
                            </dx:GridViewDataTextColumn>
                        </Columns>
                        <ClientSideEvents  SelectionChanged="function(s, e) {
	                    if (e.isSelected)
                    {
                        grid.PerformCallback(e.visibleIndex.toString());
                    }

                    }" />
                    </dx:ASPxGridView>
                    <asp:SqlDataSource ID="ds_Student" runat="server" ConnectionString="<%$ ConnectionStrings:EnterpriseValeConnectionString %>"
                        SelectCommand="SELECT [MatricNo], [Forename], [Surname], [Gender] FROM [Student]">
                    </asp:SqlDataSource>


<dx:ASPxGridView ID="ASPxGridView1" runat="server" AutoGenerateColumns="False"  DataSourceID="ds_StudentDetail"
                >
            <Columns>
                <dx:GridViewDataDateColumn FieldName="DateOfBirth" VisibleIndex="0">
                </dx:GridViewDataDateColumn>
                <dx:GridViewDataTextColumn FieldName="Email" VisibleIndex="1">
                </dx:GridViewDataTextColumn>
                <dx:GridViewDataTextColumn FieldName="Telephone" VisibleIndex="2">
                </dx:GridViewDataTextColumn>
            </Columns>
        </dx:ASPxGridView>
        </ContentTemplate>
        </asp:UpdatePanel>
        <asp:SqlDataSource ID="ds_StudentDetail" runat="server" ConnectionString="<%$ ConnectionStrings:EnterpriseValeConnectionString %>  "
            SelectCommand="SELECT [DateOfBirth], [Email], [Telephone] FROM [Student] WHERE ([MatricNo] = @MatricNo)" >
            <SelectParameters>
             <asp:SessionParameter SessionField="MatricNo" Name="MatricNo"></asp:SessionParameter>
            </SelectParameters>
        </asp:SqlDataSource>


Code Behind is 

  protected void ASPxGridView1_CustomCallback(object sender, ASPxGridViewCustomCallbackEventArgs e)
    {
        int index = Convert.ToInt32(e.Parameters);

        string[] fieldNames = { "MatricNo", "Surname" };
        object[] values = (object[])((ASPxGridView)sender).GetRowValues(index, fieldNames);


       Session["MatricNo"] = Convert.ToInt32(values[0]);
        ASPxGridView1.DataBind();

    }

Open in new window

<dx:ASPxGridView ID="grid" runat="server" AutoGenerateColumns="False" DataSourceID="ds_Student"
                        KeyFieldName="MatricNo" ClientInstanceName="grid" OnCustomCallback="ASPxGridView1_CustomCallback">
                        <Columns>
                           <dx:GridViewCommandColumn VisibleIndex="3">
                                <SelectButton Text="select" Visible="True">
                                </SelectButton>
                            </dx:GridViewCommandColumn>
                            <dx:GridViewDataTextColumn FieldName="MatricNo" ReadOnly="True" VisibleIndex="0">
                            </dx:GridViewDataTextColumn>
                            <dx:GridViewDataTextColumn FieldName="Forename" VisibleIndex="1">
                            </dx:GridViewDataTextColumn>
                            <dx:GridViewDataTextColumn FieldName="Surname" VisibleIndex="2">
                            </dx:GridViewDataTextColumn>
                        </Columns>
                        <ClientSideEvents  SelectionChanged="function(s, e) {
	                    if (e.isSelected)
                    {
                        grid.PerformCallback(e.visibleIndex.toString());
                    }

                    }" />
                    </dx:ASPxGridView>
                    <asp:SqlDataSource ID="ds_Student" runat="server" ConnectionString="<%$ ConnectionStrings:EnterpriseValeConnectionString %>"
                        SelectCommand="SELECT [MatricNo], [Forename], [Surname], [Gender] FROM [Student]">
                    </asp:SqlDataSource>


<dx:ASPxGridView ID="ASPxGridView1" runat="server" AutoGenerateColumns="False"  DataSourceID="ds_StudentDetail"
                >
            <Columns>
                <dx:GridViewDataDateColumn FieldName="DateOfBirth" VisibleIndex="0">
                </dx:GridViewDataDateColumn>
                <dx:GridViewDataTextColumn FieldName="Email" VisibleIndex="1">
                </dx:GridViewDataTextColumn>
                <dx:GridViewDataTextColumn FieldName="Telephone" VisibleIndex="2">
                </dx:GridViewDataTextColumn>
            </Columns>
        </dx:ASPxGridView>
        </ContentTemplate>
        </asp:UpdatePanel>
        <asp:SqlDataSource ID="ds_StudentDetail" runat="server" ConnectionString="<%$ ConnectionStrings:EnterpriseValeConnectionString %>  "
            SelectCommand="SELECT [DateOfBirth], [Email], [Telephone] FROM [Student] WHERE ([MatricNo] = @MatricNo)" >
            <SelectParameters>
             <asp:SessionParameter SessionField="MatricNo" Name="MatricNo"></asp:SessionParameter>
            </SelectParameters>
        </asp:SqlDataSource>


Code Behind is 

  protected void ASPxGridView1_CustomCallback(object sender, ASPxGridViewCustomCallbackEventArgs e)
    {
        int index = Convert.ToInt32(e.Parameters);

        string[] fieldNames = { "MatricNo", "Surname" };
        object[] values = (object[])((ASPxGridView)sender).GetRowValues(index, fieldNames);


       Session["MatricNo"] = Convert.ToInt32(values[0]);
        ASPxGridView1.DataBind();

    }

Open in new window

0
Comment
Question by:mmalik15
  • 2
3 Comments
 
LVL 9

Accepted Solution

by:
puru1981 earned 2000 total points
ID: 33540478
you can do this using dataset,datatables and relation. see the link below.

in example combobox is used you can use the gridview similarly.

http://www.experts-exchange.com/Programming/Languages/C_Sharp/Q_26411173.html
0
 

Author Comment

by:mmalik15
ID: 33540519
Thanks for the comment.
I am specificallly looking for the DevExpress Gridviews. And sorry that example does not seem to be relevant



0
 
LVL 9

Expert Comment

by:puru1981
ID: 33541496
i am talking here about dataset, datatable and datarelation. Forget about the other things.

you can see the datarelation easing the development in 3rd solution provided in this link

http://www.emoreau.com/Entries/Articles/2007/01/Setting-a-masterdetail-relationship-between-two-ComboBox.aspx

by using relation you can get the child rows from table2 depending on the foreign key column in table1 while creating the relation.

in devexpress gridviews you also set the datasource property to see the grid populated.

can you give me the code so that i can make it happen for you.
0

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