强制填充DataGrideView

问题描述

大家好，
我正在Window窗体应用程序上工作，正在使用"DataGrideView"控件.它具有tabcontrol，并且我的两个标签都包含2个不同的"DataGrideView"，我使用下面的代码在第一个标签及其上填充"DataGrideView"工作绝对好:

Hello All,
Am working on the Window form application and I am using "DataGrideView" Control On that.I have tabcontrols on that and my both the tab consist 2 diffrerent "DataGrideView" I use the code below to fill "DataGrideView" on my first tab and its working absolutly fine:

 con.Open();
OleDbCommand cmdcop = new OleDbCommand("Select * from Rechcop", con);
if (cmdcop.ExecuteReader().HasRows)
{
    OleDbDataAdapter adpcop = new OleDbDataAdapter("Select * from Rechcop", con);
    DataTable dtcop = new DataTable();
    adpcop.Fill(dtcop);
    grdRich.DataSource = dtcop;
    con.Close();
}
else
{
    MessageBox.Show("No Recharg Coupan is added yet.Add RechargeCoupan.");
    tabControl1.Focus();
}

但是，当我想用​​相同的方法在第二个选项卡上填充DataGrideView，但datagridview不同时，下面的代码将执行，但DataGridview仍然为空.

But when I want to fill DataGrideView on second tab with same method but datagridview is different the code below is executes but still DataGridview is Empty.

con.Open();
OleDbCommand cmdsim = new OleDbCommand("Select * from SimCard", con);
if (cmd.ExecuteReader().HasRows)
{
    OleDbDataAdapter adpsim = new OleDbDataAdapter("Select * from SimCard", con);
    DataTable dtsim = new DataTable();
    adpsim.Fill(dtsim);
    grdSimCard.DataSource = dtsim;
    con.Close();
}
else
{
    MessageBox.Show("No SimCard is added yet.Add SimCard.");
    tabControl1.Focus();
}

我尝试引用DataGride，但是它无法正常工作，我也尝试在ButtonClick上填充它，但仍然没有帮助.

有人可以帮我解决这个问题吗?...

在此先感谢
Yogesh
:-)

I tried to refersh the DataGride but it wont work,also I try to populate that on ButtonClick enevt still it wont help.

Can sombody Help me to tackle that issue....?

Thanks in Advance
Yogesh
:-)

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