How to check Gridview Null or not

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Hi,
Here my problem is i want to check grdview null or not... i am using store procedure for check some condition

MY SP:

SQL

ALTER proc [Abileshop].[GrdOpenClose]
(
@compliantid varchar(50),
@out varchar(100) output
)
as
begin
declare @s varchar(10)
select @s=status from newcomp1 where compliantid=@compliantid order by id
if(@s='closed')
set @out='No Compliant Found'
else
begin
    select id,compliantid,priorty,status,convert(varchar,compdate,103)'CompliantDate' from newcomp1 where compliantid=@compliantid
end
end

when it return output i want to show in gridview or i want to load the data in gridview

MY CS:

C#

con = new SqlConnection(constr);
con.Open();
query = "GrdOpenClose";
cmd = new SqlCommand(query, con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@compliantid", txtcompid.Text);
cmd.Parameters.Add("@out", SqlDbType.VarChar, 100).Direction = ParameterDirection.Output;
da = new SqlDataAdapter(cmd);
ds = new DataSet();
da.Fill(ds);
DataTable dt = new DataTable();
if (dt.Rows.Count==0)
{
    grdpending.DataSource = ds;//.Tables["newcomp1"];
    grdpending.DataBind();
}
else
{
    grdpending.EmptyDataText = "No Data Found";
}

How can i do that all the stuff...

Thanks...

Posted 16-May-14 20:03pm

prasanna.raj

Updated 16-May-14 20:25pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

v2

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Comments

DamithSL 17-May-14 2:17am

try below
if (ds.Tables.count>0 && ds.Tables[0].Rows.Count>0)
{
grdpending.DataSource = ds.Tables[0];
grdpending.DataBind();
}
else
{
grdpending.EmptyDataText = "No Data Found";
}

prasanna.raj 17-May-14 2:56am

it showing error
"table collection could not be find"

DamithSL 17-May-14 3:20am

check my answer

3 solutions

Solution 2

You are binding the Database results to a DataSet, but trying to compare the count from a DataTable which is empty.

Do like below...

C#

ds = new DataSet();
da.Fill(ds);
DataTable dt = new DataTable();

If(ds != null && ds.Tables[0] != null && ds.Tables[0].Rows.Count > 0)
{
    grdpending.DataSource = ds.Tables[0];
    grdpending.DataBind();
}
else
{
    grdpending.EmptyDataText = "No Data Found";
}

Posted 16-May-14 20:22pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Comments

prasanna.raj 17-May-14 2:38am

wait i am trying...

prasanna.raj 17-May-14 2:45am

all stuff skiping in else part only

prasanna.raj 17-May-14 2:54am

it showing error "could not find table[0] " when i try to change table["tbname"] it always execute else part only...

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Mandip Grewal · Accepted Answer · 2014-05-16T22:01:00

Please replace the following code

C#

da.Fill(ds);
DataTable dt = new DataTable();
if (dt.Rows.Count==0)
{
    grdpending.DataSource = ds;//.Tables["newcomp1"];
    grdpending.DataBind();
}
else
{
    grdpending.EmptyDataText = "No Data Found";
}

with

C#

da.Fill(ds);

// No need to keep Empty Data Text in Else condition because it appears only when gridview doesn't have any row. But we have to bind the null value with girdview

grdpending.EmptyDataText = "No Data Found";

grdpending.DataSource = null;

//Using two conditions here to avoid the null exception that occur when there is no table returned from stored procedure.
if (ds.Tables.Count>0)
{
 if(ds.Tables[0].Rows.Count>0)
 {
    grdpending.DataSource = ds;  //.Tables["newcomp1"];
 }
}

grdpending.DataBind();

I hope this will help you :)

DamithSL · Accepted Answer · 2014-05-16T20:16:00

Solution 1

C#

using(SqlConnection con = new SqlConnection(constr))
using (SqlCommand cmd = new SqlCommand("GrdOpenClose", con))
{
    cmd.CommandType = CommandType.StoredProcedure;
    cmd.Parameters.AddWithValue("@compliantid", txtcompid.Text);
    SqlParameter outParam = cmd.Parameters.Add("@out", SqlDbType.VarChar, 100);
    outParam.Direction = ParameterDirection.Output;
    con.Open();
    DataTable dt = new DataTable();
    using (SqlDataAdapter da = new SqlDataAdapter(cmd))
    {
        da.Fill(dt);
        string outmsg =string.Empty;
        if (outParam.Value != DBNull.Value)
        {
            outmsg =outParam.Value.ToString();
        }
        if (string.IsNullOrEmpty(outmsg))
        {
            if (dt!=null && dt.Rows.Count>0)
            {
                grdpending.DataSource = dt;
                grdpending.DataBind();
            }
        }
    }
}

Posted 16-May-14 20:16pm

DamithSL

Updated 16-May-14 21:20pm

v4

Comments

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 17-May-14 2:26am

The condition is wrong DamithSL. If count is 0, then how it will bind? It should be the opposite.

DamithSL 17-May-14 2:28am

there is a bug in codeproject when posting answers, i could not see the answer which i post. now only i able to see. i have added comment with the answer. please check 
http://www.codeproject.com/suggestions.aspx?msg=4823036#xx4823036xx[^]

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 17-May-14 2:33am

It's ok now. :)

prasanna.raj 17-May-14 4:02am

thanks... i think small Correction 
 
if (outParam.Value != DBNull.Value) 
{ 
 
grdpending.EmptyDataText = outParam.Value.ToString(); 
grdpending.DataSource = dt; 
grdpending.DataBind(); 
} 
if (string.IsNullOrEmpty(outmsg)) 
{ 
if (dt != null && dt.Rows.Count > 0) 
{ 
grdpending.DataSource = dt; 
grdpending.DataBind(); 
} 
}

How to check Gridview Null or not

3 solutions

Solution 3

Solution 1

Solution 2

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