how gridview dropdownlist validate on gridview button click ?

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I have a dropdownlist control in gridview item template field and i want to valdate that control on button click ,button also in gridview . so please tell me any validation method either javascript validation or server side validation

Posted 31-Aug-14 18:31pm

sureshsharma123

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Zubairk1990 · Answer 1 · 2014-08-31T19:25:00

XML

<asp:TemplateField ItemStyle-VerticalAlign="Top">
    <ItemTemplate>
        <asp:dropdownList id="drp_item" runat="server"></asp:dropdownList>
    </ItemTemplate>
</asp:TemplateField>

<asp:TemplateField ItemStyle-VerticalAlign="Top">
    <ItemTemplate>
        <asp:LinkButton ID="btn_Add" ToolTip="ADD Product" OnClientClick="javascript:return Validate(this);" runat="server">
        </asp:LinkButton>
    </ItemTemplate>
</asp:TemplateField>

C#

function Validate(ths,) {
    var Cntrl_Id = ths.id.split('_');
    var drp = Cntrl_Id[0] + '_' + Cntrl_Id[1] + '_dropdown';  // here dropdown is dropdwon name.
    if ((document.getElementById(drp).value == "")
    {
        alert("Please Enter the Strength.");
        return false;
    }
    return true;
}

In below function ths will pass the actual button name and will ths.id.split you can find the your dropdown control name number of Cntrl_Id[0] can be depend on the you actual page and its control.

Thanks
Zubair

Bhavikkumar Chaudhari · Answer 2 · 2014-08-31T22:43:00

C#

function ValidateGridView() {

    var grid = document.getElementById('<%=GridView.ClientId=%>);

    if (grid != null) {
   
            var TargetBaseControl = grid;

            //var TargetChildControl1 = "TxtGrNo";
            //get all the control of the type INPUT in the base control.
            var Inputs = TargetBaseControl.getElementsByTagName("input");

            for (var n = 0; n < Inputs.length; ++n) {
                if (Inputs[n].type == 'checkbox' && Inputs[n].id.indexOf('chkSelect', 0) >= 0) {
                    if (Inputs[n].checked) {
                        var RowId = (Inputs[n].parentNode.parentNode.parentNode).rowIndex;
                        var InpCtrls = grid.rows[RowId].getElementsByTagName('input');
                        for (var i = 0; i < InpCtrls.length; ++i) {
                            if (InpCtrls[i].id.indexOf('TxtGrNo', 0) >= 0 && InpCtrls[i].value == '') {
                                document.getElementById(InpCtrls[i].id).style.border = "1px solid red";
                                document.getElementById(InpCtrls[i].id).style.background = "#FFCECE";
                                document.getElementById(InpCtrls[i].id).focus();
                                alert('Plz Enter value in GRNumber...!');
                                return false;
                            }
			}
		}
	    }
	}

}

Above code is used to validate any controls inside GridView.
I have implemented above code for checkbox and textbox inside gridview by finding all input controls from Gridview.
Same you cand use for "Select" controls inside gridview.

Zubairk1990 · Answer 3 · 2014-08-31T20:27:00

Solution 4

Is your Button is inside the grid?

Posted 31-Aug-14 20:27pm

Zubairk1990

Comments

sureshsharma123 1-Sep-14 2:47am

yes sir

Thanks7872 1-Sep-14 7:20am

Use reply button at comment. Don't post multiple solutions to single post until and unless it is necessary.

Zubairk1990 · Answer 4 · 2014-08-31T21:06:00

Solution 5

Check with below code.

foreach (GridViewRow row in this.gridView.Rows)
{
DropDownList ddl = row.FindControl("ddlName") as DropDownList;
if(check drop down here..)
{

}
}

Posted 31-Aug-14 21:06pm