Ir al contenido principal

C# Tricks

Datable

Read a Column

Select the row and then ask for the field.

  • DataTable requestedTags;
  • requestedTags.Rows[0]["status"]

GridView

Add a field

  • To add a field beyond the result of your query use <asp:TemplateField>
               <asp:TemplateField HeaderText="New On Board Week">
                        <ItemTemplate>
                            <asp:DropDownList ID="ddlChange" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddlChange_SelectedIndexChanged">
                                <asp:ListItem>--Change in:--</asp:ListItem>
                                <asp:ListItem>User</asp:ListItem>
                                <asp:ListItem>Plates</asp:ListItem>
                                <asp:ListItem>Car</asp:ListItem>
                            </asp:DropDownList>
                        </ItemTemplate>

                    </asp:TemplateField>

Add a button and define its action

  • Add the button in the gridView
  • Define the CommmandName
    • <asp:ButtonField ButtonType="Button" Text="Select" CommandName="Select"  />
  • Define in the gridView the property OnRowCommand="grdData_RowCommand"
  • In the code part create the method that you define in the OnRowCommand 
    • To filter the commands inside the method
 if (e.CommandName == "Select")
            {

           }

Know row index


  • Inside the method of the element inside the GridView
    • Cast the sender to your element type
    • From that cast element call the Parent two times to get the GridViewRow
    • Now call from the GridViewRow the property RowIndex
protected void ddlActivity_SelectedIndexChanged(object sender, EventArgs e)
    {

        DropDownList ddlCurrentDropDownList = (DropDownList)sender;
        GridViewRow grdrDropDownRow = ((GridViewRow)ddlCurrentDropDownList.Parent.Parent);

        if (String.Compare(ddlCurrentDropDownList.SelectedItem.Value, "-1") != 0)
        {
            DropDownList ddlSubactivity = (DropDownList)gvCreateProject.Rows[grdrDropDownRow.RowIndex].Cells[2].FindControl("ddlSubactivity");
            ddlSubactivity.Enabled = true;
            FillSubactivityDdl(ddlSubactivity, Convert.ToInt32(ddlCurrentDropDownList.SelectedValue));
        }
    }

Add a scraoll

Put the gridview inside a div

<div style="overflow:scroll; height: 100%; width: 100%">
  <asp:GridView ......></asp:GridView>
</div>



Comentarios

Publicar un comentario

Entradas populares de este blog

Python create package

Create a root folder Create a sub-folder "example_pkg" that contains the funtionallity packaging_tutorial/ example_pkg/ __init__.py In the root folder create the following structure  packaging_tutorial/ example_pkg/ __init__.py tests/ setup.py LICENSE README.md in the setup.py contains the configuration of the packages your package is found by find_packages() import setuptools with open ( "README.md" , "r" ) as fh : long_description = fh . read () setuptools . setup ( name = "example-pkg-YOUR-USERNAME-HERE" , # Replace with your own username version = "0.0.1" , author = "Example Author" , author_email = "author@example.com" , description = "A small example package" , long_description = long_description , long_description_content_type = "text/markdown" , url = "https://github.com/pypa/sam...
Publicar un comentario
Leer más

Rails - Basic Steps III

pValidations Validations are a type of ActiveRecord Validations are defined in our models Implement Validations Go to   root_app/app/models Open files  *.rb for each model Mandatory field validates_presence_of   :field Ex:   validates_presence_of    :title Classes The basic syntax is class MyClass        @global_variable                def my_method              @method_variable        end end Create an instance myInstance = MyClass.new Invoke a mehod mc.my_method class() method returns the type of the object In Ruby, last character of method define the behavior If ends with a question -> return a boolean value If ends with an exclamation -> change the state of the object Getter / Setter method def global_variable       return @global_variable end ...
Publicar un comentario
Leer más

Android - Basic Steps (Service)

Service Run in the main thread of the hosting application Android can kill the Service if need the resources Purpose Supporting inter-application method execution Performing background processing Start a Service Call Context.startService(Intent intent)\ To call from a Fragment use getActivity().getApplicationContext().startService( intentService); Executing the service After call startService(...)  In the Service is executed the method onStartCommand(...) If the method returns the constant START_NOT_STICKY then Android will not restart the service automatically if the the process is killedp Foreground To execute the service foreground call the method startForeground() Use this if the user is aware of the process Bind to a Service Call the method Context.bindService( Intent service ServiceConnection con int flags ) Send Toast from the Service On the method onStartCommand receive the message   ...
Publicar un comentario
Leer más