未将对象引用设置到对象的实例 查询出数据了 但是不能和标题对应用了标题对应的列名在标题那一行继续排列 private void but_c1_Click(object sender, EventArgs e)
{
string Gyw = this.txt_c1.Text.ToString().Trim();
if (op.Gettel(Gyw))
{
MessageBox.Show("查询记录成功！", "温馨提示");
this.dataGridView1.DataSource = ds.Tables[0];
bindDataGridView();
}
else
{ MessageBox.Show("查询记录失败！", "温馨提示");
clear();
bindDataGridView();
}
}
{
string Gyw = this.txt_c1.Text.ToString().Trim();
if (op.Gettel(Gyw))
{
MessageBox.Show("查询记录成功！", "温馨提示");
this.dataGridView1.DataSource = ds.Tables[0];
bindDataGridView();
}
else
{ MessageBox.Show("查询记录失败！", "温馨提示");
clear();
bindDataGridView();
}
}
请参见此消息的结尾。************** 异常文本 **************
System.NullReferenceException: 未将对象引用设置到对象的实例。
在 teleOrder.User.dataGridView1_RowEnter(Object sender, DataGridViewCellEventArgs e) 位置 D:\我的文档\My Documents\Visual Studio 2008\Projects\teleOrder\teleOrder\User.cs:行号 213
在 System.Windows.Forms.DataGridView.OnRowEnter(DataGridViewCellEventArgs e)
在 System.Windows.Forms.DataGridView.OnRowEnter(DataGridViewCell& dataGridViewCell, Int32 columnIndex, Int32 rowIndex, Boolean canCreateNewRow, Boolean validationFailureOccurred)
在 System.Windows.Forms.DataGridView.SetCurrentCellAddressCore(Int32 columnIndex, Int32 rowIndex, Boolean setAnchorCellAddress, Boolean validateCurrentCell, Boolean throughMouseClick)
在 System.Windows.Forms.DataGridView.SetAndSelectCurrentCellAddress(Int32 columnIndex, Int32 rowIndex, Boolean setAnchorCellAddress, Boolean validateCurrentCell, Boolean throughMouseClick, Boolean clearSelection, Boolean forceCurrentCellSelection)
在 System.Windows.Forms.DataGridView.MakeFirstDisplayedCellCurrentCell(Boolean includeNewRow)
在 System.Windows.Forms.DataGridView.OnRowCollectionChanged_PostNotification(Boolean recreateNewRow, Boolean allowSettingCurrentCell, CollectionChangeAction cca, DataGridViewRow dataGridViewRow, Int32 rowIndex)
在 System.Windows.Forms.DataGridViewRowCollection.OnCollectionChanged_PostNotification(CollectionChangeAction cca, Int32 rowIndex, Int32 rowCount, DataGridViewRow dataGridViewRow, Boolean changeIsDeletion, Boolean changeIsInsertion, Boolean recreateNewRow, Point newCurrentCell)
在 System.Windows.Forms.DataGridViewRowCollection.OnCollectionChanged(CollectionChangeEventArgs e, Int32 rowIndex, Int32 rowCount, Boolean changeIsDeletion, Boolean changeIsInsertion, Boolean recreateNewRow, Point newCurrentCell)
在 System.Windows.Forms.DataGridViewRowCollection.InsertInternal(Int32 rowIndex, DataGridViewRow dataGridViewRow, Boolean force)
在 System.Windows.Forms.DataGridViewRowCollection.InsertInternal(Int32 rowIndex, DataGridViewRow dataGridViewRow)
在 System.Windows.Forms.DataGridViewRowCollection.AddInternal(DataGridViewRow dataGridViewRow)
在 System.Windows.Forms.DataGridView.RefreshRows(Boolean scrollIntoView)
在 System.Windows.Forms.DataGridView.RefreshColumnsAndRows()
在 System.Windows.Forms.DataGridView.OnBindingContextChanged(EventArgs e)
在 System.Windows.Forms.Control.OnParentBindingContextChanged(EventArgs e)
在 System.Windows.Forms.Control.OnBindingContextChanged(EventArgs e)
在 System.Windows.Forms.Control.set_BindingContextInternal(BindingContext value)
在 System.Windows.Forms.ContainerControl.set_BindingContext(BindingContext value)
在 System.Windows.Forms.ContainerControl.get_BindingContext()
在 System.Windows.Forms.Control.get_BindingContextInternal()
在 System.Windows.Forms.Control.get_BindingContext()
在 System.Windows.Forms.DataGridView.DataGridViewDataConnection.SetDataConnection(Object dataSource, String dataMember)
在 System.Windows.Forms.DataGridView.set_DataSource(Object value)
在 teleOrder.User.but_c1_Click(Object sender, EventArgs e) 位置 D:\我的文档\My Documents\Visual Studio 2008\Projects\teleOrder\teleOrder\User.cs:行号 280
在 System.Windows.Forms.Control.OnClick(EventArgs e)
在 System.Windows.Forms.Button.OnClick(EventArgs e)
在 System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
在 System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
在 System.Windows.Forms.Control.WndProc(Message& m)
在 System.Windows.Forms.ButtonBase.WndProc(Message& m)
在 System.Windows.Forms.Button.WndProc(Message& m)
在 System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
在 System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
在 System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** 已加载的程序集 **************
mscorlib
程序集版本: 2.0.0.0
Win32 版本: 2.0.50727.3053 (netfxsp.050727-3000)
基本代码: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
teleOrder
程序集版本: 1.0.0.0
Win32 版本: 1.0.0.0
基本代码: file:///D:/我的文档/My%20Documents/Visual%20Studio%202008/Projects/teleOrder/teleOrder/bin/Release/teleOrder.exe
----------------------------------------
System.Windows.Forms
程序集版本: 2.0.0.0
Win32 版本: 2.0.50727.3053 (netfxsp.050727-3000)
基本代码: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
程序集版本: 2.0.0.0
Win32 版本: 2.0.50727.3053 (netfxsp.050727-3000)
基本代码: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
程序集版本: 2.0.0.0
Win32 版本: 2.0.50727.3053 (netfxsp.050727-3000)
基本代码: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Data
程序集版本: 2.0.0.0
Win32 版本: 2.0.50727.3053 (netfxsp.050727-3000)
基本代码: file:///C:/WINDOWS/assembly/GAC_32/System.Data/2.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------
System.Xml
程序集版本: 2.0.0.0
Win32 版本: 2.0.50727.3053 (netfxsp.050727-3000)
基本代码: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Windows.Forms.resources
程序集版本: 2.0.0.0
Win32 版本: 2.0.50727.3053 (netfxsp.050727-3000)
基本代码: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms.resources/2.0.0.0_zh-CHS_b77a5c561934e089/System.Windows.Forms.resources.dll
----------------------------------------
System.Configuration
程序集版本: 2.0.0.0
Win32 版本: 2.0.50727.3053 (netfxsp.050727-3000)
基本代码: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Transactions
程序集版本: 2.0.0.0
Win32 版本: 2.0.50727.3053 (netfxsp.050727-3000)
基本代码: file:///C:/WINDOWS/assembly/GAC_32/System.Transactions/2.0.0.0__b77a5c561934e089/System.Transactions.dll
----------------------------------------
System.EnterpriseServices
程序集版本: 2.0.0.0
Win32 版本: 2.0.50727.3053 (netfxsp.050727-3000)
基本代码: file:///C:/WINDOWS/assembly/GAC_32/System.EnterpriseServices/2.0.0.0__b03f5f7f11d50a3a/System.EnterpriseServices.dll
----------------------------------------
mscorlib.resources
程序集版本: 2.0.0.0
Win32 版本: 2.0.50727.3053 (netfxsp.050727-3000)
基本代码: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------************** JIT 调试 **************
要启用实时(JIT)调试，
该应用程序或计算机的 .config 文件(machine.config)的 system.windows.forms 节中必须设置
jitDebugging 值。
编译应用程序时还必须启用
调试。例如: <configuration>
<system.windows.forms jitDebugging="true" />
</configuration>启用 JIT 调试后，任何无法处理的异常
都将被发送到在此计算机上注册的 JIT 调试器，
而不是由此对话框处理。
{
string sql = "select * from work where Gyw='"+Gyw+"'";
//SqlConnection conn = new SqlConnection("Persist Security Info=true;Integrated Security=SSPI;database=longj;server=.;Connect Timeout=30");
DataSet ds = new DataSet();
SqlDataAdapter sda = new SqlDataAdapter(sql, conn); try
{
if (conn.State != ConnectionState.Open)
conn.Open();
sda.Fill(ds);
return ds.Tables[0].Rows.Count > 0;
}
catch (Exception ex)
{
throw ex;
}
finally
{
conn.Close();
}
}
teleOrder.User.dataGridView1_RowEnter(Object sender, DataGridViewCellEventArgs e)第213行是什么？试试：
private void dataGridView1_RowEnter(object sender, DataGridViewCellEventArgs e)
{
if (dataGridView1.CurrentCell == null) return;
if (e.RowIndex < 0 || e.ColumnIndex < 0) return; // ...你原来的代码
}
{
public partial class User : Form
{
public gyk op;
public DataSet ds;
UserInfoOBJ userinfoobj;
public User()
{
InitializeComponent();
op = new gyk();
ds = new DataSet();
userinfoobj = new UserInfoOBJ();
}
public void bindDataGridView()
{
ds = op.GetUserInfo();
this.dataGridView1.Rows.Clear();
if (ds.Tables[0].Rows.Count > 0)
{ for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
string[] data = new string[] { ds.Tables[0].Rows[i][0].ToString(), ds.Tables[0].Rows[i][1].ToString(), ds.Tables[0].Rows[i][2].ToString(), ds.Tables[0].Rows[i][3].ToString(), ds.Tables[0].Rows[i][4].ToString(), ds.Tables[0].Rows[i][5].ToString(), ds.Tables[0].Rows[i][6].ToString(), ds.Tables[0].Rows[i][7].ToString(), ds.Tables[0].Rows[i][8].ToString(), ds.Tables[0].Rows[i][9].ToString(), ds.Tables[0].Rows[i][10].ToString(), ds.Tables[0].Rows[i][11].ToString(), ds.Tables[0].Rows[i][12].ToString(), ds.Tables[0].Rows[i][13].ToString()};
this.dataGridView1.Rows.Add(data); }
} } public void User_Load(object sender, EventArgs e)
{
bindDataGridView();
} public void label1_Click(object sender, EventArgs e)
{ } public void label1_Click_1(object sender, EventArgs e)
{ } private void dataGridView1_Click_1(object sender, EventArgs e)
{
if (this.dataGridView1.SelectedRows.Count > 0)
{
this.lab_uid.Text = this.dataGridView1.SelectedRows[0].Cells[0].Value.ToString();
this.txt_gongdan.Text = this.dataGridView1.SelectedRows[0].Cells[1].Value.ToString();
this.txt_time.Text = this.dataGridView1.SelectedRows[0].Cells[2].Value.ToString();
this.txt_ad.Text = this.dataGridView1.SelectedRows[0].Cells[3].Value.ToString();
this.txt_zl.Text = this.dataGridView1.SelectedRows[0].Cells[4].Value.ToString();
this.txt_zh.Text = this.dataGridView1.SelectedRows[0].Cells[5].Value.ToString();
this.txt_pw.Text = this.dataGridView1.SelectedRows[0].Cells[6].Value.ToString();
this.txt_yw.Text = this.dataGridView1.SelectedRows[0].Cells[7].Value.ToString();
this.txt_lianxi.Text = this.dataGridView1.SelectedRows[0].Cells[8].Value.ToString();
this.txt_jf.Text = this.dataGridView1.SelectedRows[0].Cells[9].Value.ToString();
this.txt_l.Text = this.dataGridView1.SelectedRows[0].Cells[10].Value.ToString();
this.txt_p.Text = this.dataGridView1.SelectedRows[0].Cells[11].Value.ToString();
this.txt_h.Text = this.dataGridView1.SelectedRows[0].Cells[12].Value.ToString();
this.txt_v.Text = this.dataGridView1.SelectedRows[0].Cells[13].Value.ToString();
}
} private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{ } private void btn_add_Click(object sender, EventArgs e)
{
userinfoobj.Gid = this.lab_uid.Text.Trim();
userinfoobj.GOrder = this.txt_gongdan.Text.Trim();
userinfoobj.Gtime = this.txt_time.Text.Trim();
userinfoobj.Gadress = this.txt_ad.Text.Trim();
userinfoobj.Gzl = this.txt_zl.Text.Trim();
userinfoobj.Gzh = this.txt_zh.Text.Trim();
userinfoobj.Gpw = this.txt_pw.Text.Trim();
userinfoobj.Gyw = this.txt_yw.Text.Trim();
userinfoobj.Glianxi = this.txt_lianxi.Text.Trim();
userinfoobj.Jf = this.txt_jf.Text.Trim();
userinfoobj.L = this.txt_l.Text.Trim();
userinfoobj.P = this.txt_p.Text.Trim();
userinfoobj.H = this.txt_h.Text.Trim();
userinfoobj.V = this.txt_v.Text.Trim();
//if (this.lbl_userId.Text.Trim() == "")//如果等于空--》新添记录 否则为编辑 状态
// {
if (op.AddUser(userinfoobj))
{
MessageBox.Show("成功添加记录！","温馨提示");
bindDataGridView();
}
else
{ MessageBox.Show("添加记录失败！", "温馨提示");
bindDataGridView();
}
} private void btn_edt_Click(object sender, EventArgs e)
{
userinfoobj.Gid = this.lab_uid.Text.Trim();
userinfoobj.GOrder = this.txt_gongdan.Text.Trim();
userinfoobj.Gtime = this.txt_time.Text.Trim();
userinfoobj.Gadress = this.txt_ad.Text.Trim();
userinfoobj.Gzl = this.txt_zl.Text.Trim();
userinfoobj.Gzh = this.txt_zh.Text.Trim();
userinfoobj.Gpw = this.txt_pw.Text.Trim();
userinfoobj.Gyw = this.txt_yw.Text.Trim();
userinfoobj.Glianxi = this.txt_lianxi.Text.Trim();
userinfoobj.Jf = this.txt_jf.Text.Trim();
userinfoobj.L = this.txt_l.Text.Trim();
userinfoobj.P = this.txt_p.Text.Trim();
userinfoobj.H = this.txt_h.Text.Trim();
userinfoobj.V = this.txt_v.Text.Trim();
if (this.lab_uid.Text.Trim() == "")//如果等于空--》新添记录 否则为编辑 状态
{
MessageBox.Show("请输入数值！", "提示");
}
else
{ if (op.EditUserInfo(userinfoobj))
{
MessageBox.Show("修改记录成功！", "提示");
bindDataGridView();
}
else
{ MessageBox.Show("修改记录失败！", "很遗憾");
bindDataGridView();
}
}
} private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{ } private void dataGridView1_RowEnter(object sender, DataGridViewCellEventArgs e)
{ //if (dataGridView1.CurrentCell == null) return;
//if (e.RowIndex < 0 || e.ColumnIndex < 0) return; this.lab_uid.Text = dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString();
this.txt_gongdan.Text = dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString();
this.txt_time.Text = dataGridView1.Rows[e.RowIndex].Cells[2].Value.ToString(); ;
this.txt_ad.Text = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString();
this.txt_zl.Text = dataGridView1.Rows[e.RowIndex].Cells[4].Value.ToString();
this.txt_zh.Text = dataGridView1.Rows[e.RowIndex].Cells[5].Value.ToString();
this.txt_pw.Text = dataGridView1.Rows[e.RowIndex].Cells[6].Value.ToString();
this.txt_yw.Text = dataGridView1.Rows[e.RowIndex].Cells[7].Value.ToString();
this.txt_lianxi.Text = dataGridView1.Rows[e.RowIndex].Cells[8].Value.ToString();
this.txt_jf.Text = dataGridView1.Rows[e.RowIndex].Cells[9].Value.ToString();
this.txt_l.Text = dataGridView1.Rows[e.RowIndex].Cells[10].Value.ToString();
this.txt_p.Text = dataGridView1.Rows[e.RowIndex].Cells[11].Value.ToString();
this.txt_h.Text = dataGridView1.Rows[e.RowIndex].Cells[12].Value.ToString();
this.txt_v.Text = dataGridView1.Rows[e.RowIndex].Cells[13].Value.ToString();
} public void clear()
{ this.lab_uid.Text = "";
this.txt_gongdan.Text = "";
this.txt_time.Text = "";
this.txt_ad.Text = "";
this.txt_zl.Text = "";
this.txt_zh.Text = "";
this.txt_pw.Text = "";
this.txt_yw.Text = "";
this.txt_lianxi.Text = "";
this.txt_jf.Text = "";
this.txt_l.Text = "";
this.txt_p.Text = "";
this.txt_h.Text = "";
this.txt_v.Text = "";
}
private void but_del_Click(object sender, EventArgs e)
{
string Gid = lab_uid.Text.Trim();
if (op.DeleteUserInfo(Gid))
{
MessageBox.Show("删除记录成功！","恭喜您");
clear();
bindDataGridView();
}
else
{ MessageBox.Show("删除记录失败！", "很遗憾");
clear();
bindDataGridView();
}
} private void but_qingkong_Click(object sender, EventArgs e)
{
clear();
MessageBox.Show("清理成功", "恭喜您");
} private void but_c1_Click(object sender, EventArgs e)
{ string Gyw = this.txt_c1.Text.ToString().Trim();
if (op.Gettel(Gyw))
{
MessageBox.Show("查询记录成功！", "恭喜您");
this.dataGridView1.DataSource = ds.Tables[0];
bindDataGridView();
}
else
{ MessageBox.Show("查询记录失败！", "很遗憾");
clear();
bindDataGridView();
}
}
}
}
Message="未将对象引用设置到对象的实例。"
Source="teleOrder"
StackTrace:
在 teleOrder.User.dataGridView1_RowEnter(Object sender, DataGridViewCellEventArgs e) 位置 D:\我的文档\My Documents\Visual Studio 2008\Projects\teleOrder\teleOrder\User.cs:行号 217
在 System.Windows.Forms.DataGridView.OnRowEnter(DataGridViewCellEventArgs e)
在 System.Windows.Forms.DataGridView.OnRowEnter(DataGridViewCell& dataGridViewCell, Int32 columnIndex, Int32 rowIndex, Boolean canCreateNewRow, Boolean validationFailureOccurred)
在 System.Windows.Forms.DataGridView.SetCurrentCellAddressCore(Int32 columnIndex, Int32 rowIndex, Boolean setAnchorCellAddress, Boolean validateCurrentCell, Boolean throughMouseClick)
在 System.Windows.Forms.DataGridView.SetAndSelectCurrentCellAddress(Int32 columnIndex, Int32 rowIndex, Boolean setAnchorCellAddress, Boolean validateCurrentCell, Boolean throughMouseClick, Boolean clearSelection, Boolean forceCurrentCellSelection)
在 System.Windows.Forms.DataGridView.MakeFirstDisplayedCellCurrentCell(Boolean includeNewRow)
在 System.Windows.Forms.DataGridView.OnRowCollectionChanged_PostNotification(Boolean recreateNewRow, Boolean allowSettingCurrentCell, CollectionChangeAction cca, DataGridViewRow dataGridViewRow, Int32 rowIndex)
在 System.Windows.Forms.DataGridViewRowCollection.OnCollectionChanged_PostNotification(CollectionChangeAction cca, Int32 rowIndex, Int32 rowCount, DataGridViewRow dataGridViewRow, Boolean changeIsDeletion, Boolean changeIsInsertion, Boolean recreateNewRow, Point newCurrentCell)
在 System.Windows.Forms.DataGridViewRowCollection.OnCollectionChanged(CollectionChangeEventArgs e, Int32 rowIndex, Int32 rowCount, Boolean changeIsDeletion, Boolean changeIsInsertion, Boolean recreateNewRow, Point newCurrentCell)
在 System.Windows.Forms.DataGridViewRowCollection.InsertInternal(Int32 rowIndex, DataGridViewRow dataGridViewRow, Boolean force)
在 System.Windows.Forms.DataGridViewRowCollection.InsertInternal(Int32 rowIndex, DataGridViewRow dataGridViewRow)
在 System.Windows.Forms.DataGridViewRowCollection.AddInternal(DataGridViewRow dataGridViewRow)
在 System.Windows.Forms.DataGridView.RefreshRows(Boolean scrollIntoView)
在 System.Windows.Forms.DataGridView.RefreshColumnsAndRows()
在 System.Windows.Forms.DataGridView.OnBindingContextChanged(EventArgs e)
在 System.Windows.Forms.Control.OnParentBindingContextChanged(EventArgs e)
在 System.Windows.Forms.Control.OnBindingContextChanged(EventArgs e)
在 System.Windows.Forms.Control.set_BindingContextInternal(BindingContext value)
在 System.Windows.Forms.ContainerControl.set_BindingContext(BindingContext value)
在 System.Windows.Forms.ContainerControl.get_BindingContext()
在 System.Windows.Forms.Control.get_BindingContextInternal()
在 System.Windows.Forms.Control.get_BindingContext()
在 System.Windows.Forms.DataGridView.DataGridViewDataConnection.SetDataConnection(Object dataSource, String dataMember)
在 System.Windows.Forms.DataGridView.set_DataSource(Object value)
在 teleOrder.User.but_c1_Click(Object sender, EventArgs e) 位置 D:\我的文档\My Documents\Visual Studio 2008\Projects\teleOrder\teleOrder\User.cs:行号 284
在 System.Windows.Forms.Control.OnClick(EventArgs e)
在 System.Windows.Forms.Button.OnClick(EventArgs e)
在 System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
在 System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
在 System.Windows.Forms.Control.WndProc(Message& m)
在 System.Windows.Forms.ButtonBase.WndProc(Message& m)
在 System.Windows.Forms.Button.WndProc(Message& m)
在 System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
在 System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
在 System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
在 System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
在 System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
在 System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
在 System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
在 System.Windows.Forms.Application.Run(Form mainForm)
在 teleOrder.Program.Main() 位置 D:\我的文档\My Documents\Visual Studio 2008\Projects\teleOrder\teleOrder\Program.cs:行号 18
在 System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
在 System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
在 Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
在 System.Threading.ThreadHelper.ThreadStart_Context(Object state)
在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
在 System.Threading.ThreadHelper.ThreadStart()
InnerException:
我的意思是返回一行并且和标题对得上
private void dataGridView1_RowEnter(object sender, DataGridViewCellEventArgs e)
{ //if (dataGridView1.CurrentCell == null) return;
//if (e.RowIndex < 0 || e.ColumnIndex < 0) return; this.lab_uid.Text = dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString();
this.txt_gongdan.Text = dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString();
this.txt_time.Text = dataGridView1.Rows[e.RowIndex].Cells[2].Value.ToString(); ;
this.txt_ad.Text = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString();
this.txt_zl.Text = dataGridView1.Rows[e.RowIndex].Cells[4].Value.ToString();
this.txt_zh.Text = dataGridView1.Rows[e.RowIndex].Cells[5].Value.ToString();
this.txt_pw.Text = dataGridView1.Rows[e.RowIndex].Cells[6].Value.ToString();
this.txt_yw.Text = dataGridView1.Rows[e.RowIndex].Cells[7].Value.ToString();
this.txt_lianxi.Text = dataGridView1.Rows[e.RowIndex].Cells[8].Value.ToString();
this.txt_jf.Text = dataGridView1.Rows[e.RowIndex].Cells[9].Value.ToString();
this.txt_l.Text = dataGridView1.Rows[e.RowIndex].Cells[10].Value.ToString();
this.txt_p.Text = dataGridView1.Rows[e.RowIndex].Cells[11].Value.ToString();
this.txt_h.Text = dataGridView1.Rows[e.RowIndex].Cells[12].Value.ToString();
this.txt_v.Text = dataGridView1.Rows[e.RowIndex].Cells[13].Value.ToString();
}
看你这个函数里面引用了不少列,是不是超了了列的索引范围?
你那么多的tostring()
是不是数据库取出来有Null然后tostring了？
null的tostring肯定报空引用错~
{
try
{
this.lab_uid.Text = dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString();
this.txt_gongdan.Text = dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString();
this.txt_time.Text = dataGridView1.Rows[e.RowIndex].Cells[2].Value.ToString(); ;
this.txt_ad.Text = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString();
this.txt_zl.Text = dataGridView1.Rows[e.RowIndex].Cells[4].Value.ToString();
this.txt_zh.Text = dataGridView1.Rows[e.RowIndex].Cells[5].Value.ToString();
this.txt_pw.Text = dataGridView1.Rows[e.RowIndex].Cells[6].Value.ToString();
this.txt_yw.Text = dataGridView1.Rows[e.RowIndex].Cells[7].Value.ToString();
this.txt_lianxi.Text = dataGridView1.Rows[e.RowIndex].Cells[8].Value.ToString();
this.txt_jf.Text = dataGridView1.Rows[e.RowIndex].Cells[9].Value.ToString();
this.txt_l.Text = dataGridView1.Rows[e.RowIndex].Cells[10].Value.ToString();
this.txt_p.Text = dataGridView1.Rows[e.RowIndex].Cells[11].Value.ToString();
this.txt_h.Text = dataGridView1.Rows[e.RowIndex].Cells[12].Value.ToString();
this.txt_v.Text = dataGridView1.Rows[e.RowIndex].Cells[13].Value.ToString();
}
catch (Exception ex) { MessageBox.Show(ex.ToString()); }
}
//试一下 我自己也不知道对不
string Dym = this.txt_c1.Text.ToString().Trim();
string sql = "select * from work where Gyw='"+Gyw+"'";
list li = new List();
sqlcommand cmd = new sqlcommand (sql.conn);
sqlDataReader dr = cmd.ExcutReader();
which(dr.read())
{
//将实体添加到list
li.add(......);
}
this.dataGridView1.DataSource = li;
dataGridView1.DataBing();