C# – how to get button find control value in nested grid using c#

asp.netcgridview

I am using Nested GridViews where each row in the gridview has child gridView. I am using RowDataBound Event of Parent GridView, to Binding Child GridView. My Problem is that, how to get Child GridView's Button findcontrol value in Parent gridViews RowDataBound Event.

This is my Aspx page

         <asp:GridView ID="grdSubClaimOuter" SkinID="GridView" runat="server" Width="100%"
                    AutoGenerateColumns="false" OnRowDataBound="grdSubClaimOuter_RowDataBound" OnRowCommand="grdSubClaimOuter_RowCommand"
                    ShowFooter="false" AllowPaging="true" OnPageIndexChanging="grdSubClaimOuter_PageIndexChanging">
                    <%--<AlternatingRowStyle BackColor="ButtonFace" />--%>
                    <Columns>
                        <asp:TemplateField ItemStyle-Width="5%">
                            <ItemTemplate>
                                <asp:HiddenField ID="hdnClaimNo" runat="server" Value='<%# Eval("ClaimNo") %>' />
                                <asp:Image runat="server" ID="img1" ImageUrl="../images/Collapse_plus.png" />
                            </ItemTemplate>
                            <ItemStyle Width="5%"></ItemStyle>
                        </asp:TemplateField>
              <asp:GridView ID="grdSubClaim" runat="server" SkinID="GridView" CellPadding="4" Width="100%"
                                    AutoGenerateColumns="false" ShowFooter="false" OnRowEditing="grdSubClaim_RowEditing"
                                    OnRowCommand="grdSubClaim_RowCommand" OnRowDeleting="grdSubClaim_RowDeleted" 
                                    AllowPaging="false" >
                                    <%--SkinID="GridView"--%>
                                    <Columns>
                                        <asp:TemplateField FooterStyle-HorizontalAlign="Left" HeaderStyle-HorizontalAlign="Left">
                                            <HeaderTemplate>
                                                Sub Claim No
                                            </HeaderTemplate>
                                            <ItemTemplate>
                                                <asp:Label ID="lblSubClaimNoValue" Width="" runat="server" Text='<%#Eval("SubClaimNo")%>'></asp:Label>
                                            </ItemTemplate>
                                            <FooterStyle HorizontalAlign="Left" />
                                        </asp:TemplateField>
           <asp:Button ID="btnSubrogation" CssClass="groovybutton" runat="server" CommandName="Subrogation"
                                                    Text="Subrogation" CommandArgument='<%# Eval("ClaimNo") + "~" + Eval("SubClaimNo")%>' />
                                                <asp:Button ID="btnSalvage" CssClass="groovybutton" runat="server" CommandName="Salvage"
                                                    Text="Salvage" CommandArgument='<%# Eval("ClaimNo") + "~" + Eval("SubClaimNo")%>' />
                                            </ItemTemplate>
                                        </asp:TemplateField>
                                    </Columns>
                                    <AlternatingRowStyle CssClass="" />
                                    <RowStyle CssClass="ob_gBody" />
                                    <HeaderStyle CssClass="gridHeader" />
                                </asp:GridView>
                                <asp:Literal runat="server" ID="Literal2" Text="</td></tr>" />
                            </ItemTemplate>
                        </asp:TemplateField>
                    </Columns>
                </asp:GridView>

This is My aspx.cs file

 protected void grdSubClaimOuter_RowDataBound(object sender, GridViewRowEventArgs e)
{

    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        if (e.Row.Cells[1].Text.ToString() != "&nbsp;")
        {
            Literal ltrChild = (Literal)e.Row.FindControl("ltrChild");
            System.Web.UI.WebControls.Image img = (System.Web.UI.WebControls.Image)e.Row.Cells[0].FindControl("img1");

            ltrChild.Text = ltrChild.Text.Replace("trChildGrid", "trChildGrid" + e.Row.RowIndex.ToString());
            string strChildGrid = "trChildGrid" + e.Row.RowIndex.ToString();
            e.Row.Cells[0].Attributes.Add("OnClick", "OpenTable('" + strChildGrid + "','" + img.ClientID + "')");
            e.Row.Cells[0].RowSpan = 1;
            System.Web.UI.WebControls.GridView gvChild = (System.Web.UI.WebControls.GridView)e.Row.FindControl("grdSubClaim");
            PolicyProcessor.DAL.Claim.ClaimSubClaim objDALClaimSubClaim = new PolicyProcessor.DAL.Claim.ClaimSubClaim();
            PolicyProcessor.BOL.Claim.ClaimSubClaim objInfoClaimSubClaim = new PolicyProcessor.BOL.Claim.ClaimSubClaim();
            HiddenField hdnClaimNo = (HiddenField)e.Row.FindControl("hdnClaimNo");

            if (hdnClaimNo.Value != "")
            {
                objInfoClaimSubClaim.ClaimNo = hdnClaimNo.Value;
            }
            else
            {
                objInfoClaimSubClaim.ClaimNo = "0";
            }

            DataSet dsChild;
            dsChild = objDALClaimSubClaim.ResultSet(objInfoClaimSubClaim, "SelectInnerGrid");
            if (dsChild.Tables[0].Rows.Count > 0)
            {


                Button btn = (Button)gvChild.FindControl("btnSalvage");

           //btn is null how to get text value in btn

                btn.ForeColor = System.Drawing.Color.Red;


                gvChild.DataSource = dsChild;
                gvChild.DataBind();

            }
            else
            {
                Helper.EmptyGrid(gvChild, dsChild.Tables[0]);
            }

        }

    }
}

if anyone knows it,please help me solve this problem.thanks in advance.

Best Answer

First get a reference to the child GridView, then use FindControl to get the Button inside it:

foreach (GridViewRow row in grdSubClaimOuter.Rows) 
{
if (row.RowType == DataControlRowType.DataRow) 
{
    GridView gvChild = (GridView) row.FindControl("grdSubClaim");
    // Then do the same method for Button control column 
    if (gvChild != null)
    {
        foreach (GridViewRow row in gvChild .Rows) 
        {
            if (row.RowType == DataControlRowType.DataRow) 
            {
                Button btn = (Button ) row.FindControl("buttonID");
                if (btn != null )
                {
                    // do your work
                }
            }
        }
    }
}
}

Related Solutions

C# – How to get a consistent byte representation of strings in C# without manually specifying an encoding

Contrary to the answers here, you DON'T need to worry about encoding if the bytes don't need to be interpreted!

Like you mentioned, your goal is, simply, to "get what bytes the string has been stored in".
(And, of course, to be able to re-construct the string from the bytes.)

For those goals, I honestly do not understand why people keep telling you that you need the encodings. You certainly do NOT need to worry about encodings for this.

Just do this instead:

static byte[] GetBytes(string str)
{
    byte[] bytes = new byte[str.Length * sizeof(char)];
    System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
    return bytes;
}

// Do NOT use on arbitrary bytes; only use on GetBytes's output on the SAME system
static string GetString(byte[] bytes)
{
    char[] chars = new char[bytes.Length / sizeof(char)];
    System.Buffer.BlockCopy(bytes, 0, chars, 0, bytes.Length);
    return new string(chars);
}

As long as your program (or other programs) don't try to interpret the bytes somehow, which you obviously didn't mention you intend to do, then there is nothing wrong with this approach! Worrying about encodings just makes your life more complicated for no real reason.

Additional benefit to this approach: It doesn't matter if the string contains invalid characters, because you can still get the data and reconstruct the original string anyway!

It will be encoded and decoded just the same, because you are just looking at the bytes.

If you used a specific encoding, though, it would've given you trouble with encoding/decoding invalid characters.

C# – Get int value from enum in C#

Just cast the enum, e.g.

int something = (int) Question.Role;

The above will work for the vast majority of enums you see in the wild, as the default underlying type for an enum is int.

However, as cecilphillip points out, enums can have different underlying types. If an enum is declared as a uint, long, or ulong, it should be cast to the type of the enum; e.g. for

enum StarsInMilkyWay:long {Sun = 1, V645Centauri = 2 .. Wolf424B = 2147483649};

you should use

long something = (long)StarsInMilkyWay.Wolf424B;

Best Answer

Related Solutions

C# – How to get a consistent byte representation of strings in C# without manually specifying an encoding

C# – Get int value from enum in C#

Related Topic