Pop up if text box is blank at update - asp.net

Question

I have a web form that uses a text box to update a comments field in the database. I would like to check for a blank before update and have a reminder box that says "Comment section blank, continue?", then have a yes / no option. This would allow the user to return to the update without making changes. The text box is visible when the user selects edit on the row in a gridview. I will provide code below so that anyone can see what I am doing. If this cannot be done this way, simply a message box saying that the comment section is blank would suffice.
Here is the code behind:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Web.Security;
using System.Configuration;
namespace AnnoTracker
{
public partial class WebForm1 : System.Web.UI.Page
{
public static class MyVariables
{
public static int PI = 0;
public static string JN = "";
public static string ST = "";
public static string AT = "";
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
this.BindData();
dlAnnoType.SelectedValue = "Agency Error";
}
}
protected void EditSummary(object sender, GridViewEditEventArgs e)
{
gvSummary.EditIndex = e.NewEditIndex;
string _custName = gvSummary.DataKeys[e.NewEditIndex].Value.ToString();
BindData();
}
protected void CancelEdit(object sender, GridViewCancelEditEventArgs e)
{
gvSummary.EditIndex = -1;
BindData();
}
protected void gvSummary_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
gvSummary.PageIndex = e.NewPageIndex;
MyVariables.PI = e.NewPageIndex;
BindData();
}
protected void RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow && gvSummary.EditIndex == e.Row.RowIndex)
{
DropDownList dlBU = (DropDownList)e.Row.FindControl("dlBU");
string _custName = gvSummary.DataKeys[e.Row.RowIndex].Values[1].ToString();
string BUquery = "select distinct Unit from vw_BU where Business='" + _custName + "'";
SqlCommand BUcmd = new SqlCommand(BUquery);
dlBU.DataSource = GetData(BUcmd);
dlBU.DataTextField = "Unit";
dlBU.DataValueField = "Unit";
dlBU.DataBind();
dlBU.Items.FindByValue((e.Row.FindControl("lblBU") as Label).Text).Selected = true;
DropDownList dlPA = (DropDownList)e.Row.FindControl("dlPA");
string _PAcustName = gvSummary.DataKeys[e.Row.RowIndex].Values[1].ToString();
string PAquery = "select PA from PA where Business='" + _PAcustName + "' order by PA";
SqlCommand PAcmd = new SqlCommand(PAquery);
dlPA.DataSource = GetData(PAcmd);
dlPA.DataTextField = "PA";
dlPA.DataValueField = "PA";
dlPA.DataBind();
dlPA.Items.FindByValue((e.Row.FindControl("lblPA") as Label).Text).Selected = true;
DropDownList dlET = (DropDownList)e.Row.FindControl("dlET");
string ETquery = "select distinct ErrorType from ErrorType order by ErrorType";
SqlCommand ETcmd = new SqlCommand(ETquery);
dlET.DataSource = GetData(ETcmd);
dlET.DataTextField = "ErrorType";
dlET.DataValueField = "ErrorType";
dlET.DataBind();
dlET.Items.FindByValue((e.Row.FindControl("lblET") as Label).Text).Selected = true;
DropDownList dlAA = (DropDownList)e.Row.FindControl("dlAA");
string AAquery = "select distinct AAA from ActualAgencyError";
SqlCommand AAcmd = new SqlCommand(AAquery);
dlAA.DataSource = GetData(AAcmd);
dlAA.DataTextField = "AAA";
dlAA.DataValueField = "AAA";
dlAA.DataBind();
dlAA.Items.FindByValue((e.Row.FindControl("lblAA") as Label).Text).Selected = true;
}
}
protected void UpdateSummary(object sender, GridViewUpdateEventArgs e)
{
string BU = (gvSummary.Rows[e.RowIndex].FindControl("dlBU") as DropDownList).SelectedItem.Value;
string ET = (gvSummary.Rows[e.RowIndex].FindControl("dlET") as DropDownList).SelectedItem.Value;
string AA = (gvSummary.Rows[e.RowIndex].FindControl("dlAA") as DropDownList).SelectedItem.Value;
string PA = (gvSummary.Rows[e.RowIndex].FindControl("dlPA") as DropDownList).SelectedValue;
string AnnotationNumber = gvSummary.DataKeys[e.RowIndex].Value.ToString();
string sgkComments = (gvSummary.Rows[e.RowIndex].FindControl("tbsgkComm") as TextBox).Text;
string strConnString = ConfigurationManager.ConnectionStrings["SRM_MetricConnectionString"].ConnectionString;
using (SqlConnection con = new SqlConnection(strConnString))
{
string query = "update vw_GridviewSource set [BusinessUnit] = #BU, [ErrorType] = #ET, [sgkComments] = #sgk, [ActualAgencyError] = #AA, [PA] = #PA where [AnnotationNumber] = #AnnoNum";
using (SqlCommand cmd = new SqlCommand(query))
{
cmd.Connection = con;
cmd.Parameters.AddWithValue("#BU", BU);
cmd.Parameters.AddWithValue("#AnnoNum", AnnotationNumber);
cmd.Parameters.AddWithValue("#ET", ET);
cmd.Parameters.AddWithValue("#AA", AA);
cmd.Parameters.AddWithValue("#sgk", sgkComments);
cmd.Parameters.AddWithValue("#PA", PA);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
Response.Redirect(Request.Url.AbsoluteUri);
}
}
//gvSummary.DataBind();
BindData();
}
private void BindData()
{
if (MyVariables.JN != "" && MyVariables.ST != "" && MyVariables.AT != "")
{
dlJobName.SelectedValue = MyVariables.JN;
dlJobName.DataBind();
dlStage.SelectedValue = MyVariables.ST;
dlStage.DataBind();
dlAnnoType.SelectedValue = MyVariables.AT;
dlAnnoType.DataBind();
}
String conString = System.Configuration.ConfigurationManager.ConnectionStrings["SRM_MetricConnectionString"].ConnectionString;
string query = "select [Page_ID],[AnnotationNumber],[AnnotationBy],[PA],[AnnotationType],[BusinessUnit] as Unit,[ErrorType],[ActualAgencyError],AnnotationComments,[sgkComments],[ActualAgencyError],Cust from vw_GridviewSource order by [Page_ID]";
SqlCommand cmd = new SqlCommand();
if (dlJobName.SelectedValue != "" & dlStage.SelectedValue != "")
{
query = "select [Page_ID],[AnnotationNumber],[AnnotationBy],[PA],[AnnotationType],[BusinessUnit] as Unit,[ErrorType],[ActualAgencyError],AnnotationComments,[sgkComments],[ActualAgencyError],Cust from vw_GridviewSource where Name = '" + dlJobName.SelectedValue + "' and AnnotationDate = '" + dlStage.SelectedValue + "' order by [Page_ID]";
//cmd.Parameters.AddWithValue("#Name", dlJobName.SelectedValue);
//cmd.Parameters.AddWithValue("#Stage", dlStage.SelectedValue);
}
if (dlAnnoType.SelectedValue != "" && (dlJobName.SelectedValue != "" && dlStage.SelectedValue != ""))
{
query = "select [Page_ID],[AnnotationNumber],[AnnotationBy],[PA],[AnnotationType],[BusinessUnit] as Unit,[ErrorType],[ActualAgencyError],AnnotationComments,[sgkComments],[ActualAgencyError],Cust from vw_GridviewSource where AnnotationType = '" + dlAnnoType.SelectedValue + "' and Name = '" + dlJobName.SelectedValue + "' and AnnotationDate = '" + dlStage.SelectedValue + "' order by [Page_ID]";
}
if (dlAnnoType.SelectedValue != "" && (dlJobName.SelectedValue.Length < 2 && dlStage.SelectedValue.Length < 2) )
{
query = "select [Page_ID],[AnnotationNumber],[AnnotationBy],[PA],[AnnotationType],[BusinessUnit] as Unit,[ErrorType],[ActualAgencyError],AnnotationComments,[sgkComments],[ActualAgencyError],Cust from vw_GridviewSource where AnnotationType = '" + dlAnnoType.SelectedValue + "' order by [Page_ID]";
}
cmd.CommandText = query;
SqlConnection con = new SqlConnection(conString);
cmd.CommandType = CommandType.Text;
cmd.Connection = con;
SqlDataAdapter sda = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
sda.Fill(ds);
gvSummary.DataSource = ds;
gvSummary.PageIndex = MyVariables.PI;
gvSummary.DataBind();
//string #Name;
//string #Stage;
//#Name = dlJobName.SelectedValue;
//#Stage = dlStage.SelectedValue;
//string query = "select [AnnotationNumber],[AnnotationBy],[AnnotationType],[BusinessUnit] as Unit,[ErrorType],[ActualAgencyError],AnnotationComments,[sgkComments],[ActualAgencyError],Cust from vw_GridviewSource where Name = '" + #Name + "' and AnnotationDate = '" + #Stage + "'";
//SqlCommand cmd = new SqlCommand(query);
//gvSummary.DataSource = GetData(cmd);
//gvSummary.DataBind();
}
private DataTable GetData(SqlCommand cmd)
{
string strConnString = ConfigurationManager.ConnectionStrings["SRM_MetricConnectionString"].ConnectionString;
using (SqlConnection con = new SqlConnection(strConnString))
{
using (SqlDataAdapter sda = new SqlDataAdapter())
{
cmd.Connection = con;
sda.SelectCommand = cmd;
using (DataTable dt = new DataTable())
{
sda.Fill(dt);
return dt;
}
}
}
}
protected void dlJobName_SelectedIndexChanged(object sender, EventArgs e)
{
MyVariables.JN = dlJobName.SelectedValue;
dlStage.DataBind();
MyVariables.ST = dlStage.SelectedValue;
gvSummary.DataBind();
BindData();
}
protected void dlStage_SelectedIndexChanged(object sender, EventArgs e)
{
MyVariables.JN = dlJobName.SelectedValue;
//dlStage.DataBind();
MyVariables.ST = dlStage.SelectedValue;
MyVariables.AT = dlAnnoType.SelectedValue;
gvSummary.DataBind();
BindData();
}
protected void dlAnnoType_SelectedIndexChanged(object sender, EventArgs e)
{
MyVariables.AT = dlAnnoType.SelectedValue;
MyVariables.JN = dlJobName.SelectedValue;
//dlStage.DataBind();
MyVariables.ST = dlStage.SelectedValue;
gvSummary.DataBind();
BindData();
}
}
}

Answer 1

You show only server side code, and it's more complicated doing chek on server side and show message on client.
Simple sample of chek on client side by javascript:
<script type="text/javascript">
function MyConfirm() {
if (document.getElementById("tb1").value == '')
if (confirm("Comment section blank, continue?"))
return true;
else
return false;
else true;
}
</script>
<asp:TextBox runat="server" ID="tb1" />
<asp:Button runat="server" ID="btn1" onclick="btn1_Click" OnClientClick="return MyConfirm();" Text="Save" />