How to assign UpdatePanel Trigger's control ID with button's from gridview in asp.net

/////////////// Some  methods are below-

1. Using Gridview RowCreated Methode

protected void Gridview_RowCreated(object sender, GridViewRowEventArgs e)

    {

        LinkButton ControlID = (LinkButton)e.Row.Cells[0].FindControl("ControlID");

        if (ControlID != null)

        {

            ScriptManager.GetCurrent(this).RegisterPostBackControl(ControlID);

        }

    }

2. Using Gridview OnRowDataboud method

  protected void Gridview_Rowdatabound(object sender, GridViewRowEventArgs e)

    {

        if (e.Row.RowType == DataControlRowType.DataRow)

        {

            ImageButton ControlID = e.Row.FindControl("ControlID") as ImageButton;

            ScriptManager.GetCurrent(this).RegisterPostBackControl(ControlID);

        }

    }

3. Using For or Foreach loop

   private void Assign_PostBackControl(GridView Grd)

    {

        foreach (GridViewRow row in Grd.Rows)

        {

            LinkButton lnkFull = row.FindControl("ControlID") as LinkButton;

            ScriptManager.GetCurrent(this).RegisterPostBackControl(lnkFull);

        }

    }

The “&” character breaks Data that are stored in the web.config

//////////////// Inside the web.config file

Before

<appSettings>

<add key="Key" value="https://{s}.google.com/vt/lyrs=s&x={x}&y={y}&z={z}" />

  </appSettings>

After

<appSettings>

   <add key="Key" value="https://{s}.google.com/vt/lyrs=s&amp;x={x}&amp;y={y}&amp;z={z}" />  

  </appSettings>

How to access web.config settings directly in .aspx page?

///////////////////  In your web config file

<appSettings>

<add key="Key" value="this is test" />

</appSettings>

///////////////// In aspx file

<asp:TextBox ID = "txtBox1" runat = "server" Text="<%=System.Configuration.ConfigurationManager.AppSettings["Key"]%>" />

///////////////////////////// for the variable

<script type="text/javascript">

   $(document).ready(function () {

        var my1 = '<%=ConfigurationManager.AppSettings["Key"].ToString() %>';

               alert(my1);

     });

</script>

Could not load file or assembly. An attempt was made to load a program with an incorrect format (System.BadImageFormatException)

/////////////

1. You pretty sure,  you're having a 32-bit / 64-bit conflict. It sounds like your main project might be set to 32-bit while the class its referencing is set to 64-bit.

IIS >> Select Your Project >> check Application pools >> 

     IIS >> Application Polls >> Select Application pool of your project >> Advanced Setting >> Under general tab : Enable 32-bit applications -True

2. Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework64

Clear all forms controls from code-behind asp.net c#

/////////////

Use NameSpace

1. using System.Web.UI;

2. using System.Web.UI.HtmlControls;

public static void Clear_Controls_Comman(Panel ControlIDs)

    {

        foreach (Control item in ControlIDs.Controls)

        {

            if (item is TextBox)

            {

                TextBox t = item as TextBox;

                t.Text = "";

            }

            else if (item is CheckBox)

            {

                CheckBox t = item as CheckBox;

                t.Checked = false;

            }

            else if (item is DropDownList)

            {

                DropDownList t = item as DropDownList;

                t.ClearSelection();

                if (t.Items.Count > 0)

                {

                    t.SelectedIndex = 0;

                }

            }

            else if (item is CheckBoxList)

            {

                CheckBoxList t = item as CheckBoxList;

                t.ClearSelection();

            }

            else if (item is RadioButton)

            {

                RadioButton t = item as RadioButton;

                t.Checked = false;

            }

            else if (item is RadioButtonList)

            {

                RadioButtonList t = item as RadioButtonList;

                t.ClearSelection();

            }

            else if (item is HtmlInputText)

            {

                HtmlInputText t = item as HtmlInputText;

                t.Value = "";

            }

            else if (item is HtmlTextArea)

            {

                HtmlTextArea t = item as HtmlTextArea;

                t.InnerText = "";

            }

            else if (item is HtmlInputCheckBox)

            {

                HtmlInputCheckBox t = item as HtmlInputCheckBox;

                t.Checked = false;

            }

        }

    }