C# WPF数据网格选择第一行
我在每个选项卡上使用一个TabControl和一个DataGrid 只有第一个选项卡自动显示第一行。每个DataGrid都由SQL绑定填充。当DataGrid为空,或者未选择字段并单击select按钮时,程序崩溃C# WPF数据网格选择第一行,c#,wpf,data-binding,datagrid,C#,Wpf,Data Binding,Datagrid,我在每个选项卡上使用一个TabControl和一个DataGrid 只有第一个选项卡自动显示第一行。每个DataGrid都由SQL绑定填充。当DataGrid为空,或者未选择字段并单击select按钮时,程序崩溃 IsSynchronized = on SelectionMode = Extended SelectionUnit = FullRow 我需要选择按钮的正确语句。这是我的代码: private void Btn1_Click(object sender, RoutedEve
IsSynchronized = on
SelectionMode = Extended
SelectionUnit = FullRow
我需要选择按钮的正确语句。这是我的代码:
private void Btn1_Click(object sender, RoutedEventArgs e)
{
var DG1 = dg1.SelectedCells[0];
var cellInfor = dg1.SelectedCells[0];
dg1.CurrentCell = new DataGridCellInfo(dg1.Items[0], dg1.Columns[0]);
var DG11 = (cellInfor.Column.GetCellContent(cellInfor.Item) as TextBlock).Text;
if (dg1 == null || dg1.CurrentCell == null)
{
MessageBox.Show("there is no recorid selected");
return;
}
}
private void Btn2_Click(object sender, RoutedEventArgs e)
{
var DG2 = dg2.SelectedItems[0].ToString();
if (DG2.Items[0].ToString() == null || DG2.SelectedItem[0] == null)
{
MessageBox.Show("There is no RecID number selected", "Error");
return;
}
int RecID = Convert.ToInt32(DG22);
//this.AptzClearControls();
//this.GetAptzRecipe(RecID);
//this.DisplayAptzRecipe();
最后是DG22?您可能需要DG2。 您也可以对该按钮使用try{}catch{}
if (DG2.Items[0].ToString() != null && DG2.SelectedItem[0] != null)
{
int RecID = Convert.ToInt32(DG2);
}
else
{
MessageBox.Show("There is no RecID number selected", "Error");
return;
}
===============================编辑===========
我不知道你想干什么。。
您需要获取所选单元格的行/列吗?请查看此页面: 你需要这样的东西:
private void selectedCellsButton_Click(object sender, System.EventArgs e)
{
Int32 selectedCellCount =
dataGridView1.GetCellCount(DataGridViewElementStates.Selected);
if (selectedCellCount > 0)
{
for (int i = 0; i < selectedCellCount; i++)
{
(dataGridView1.SelectedCells[i].RowIndex.ToString());
(dataGridView1.SelectedCells[i].ColumnIndex.ToString());
}
}
}
}
private void selectedCellsButton\u单击(对象发送者,System.EventArgs e)
{
Int32选择的细胞计数=
dataGridView1.GetCellCount(DataGridViewElementState.Selected);
如果(selectedCellCount>0)
{
对于(int i=0;i
始终选择一行。设置,SelectionMode+=Extended,SelectionUnit=FullRow
用户可以添加行=False,自动生成列标题=False。
对于dat,我使用绑定到SQL数据库。MainWindow.xaml
我添加了DataGridTextColumn绑定和标题名。在MainWindow>xaml.cs中,我为添加的数据选择了第一个单元格。
我希望这能帮助别人
<TabItem x:Name="tab2" Header="tab2">
<Grid Background="#FFE5E5E5" DataContext="{StaticResource addTableViewSource}" >
<Grid.ColumnDefinitions>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<DataGrid x:Name="dg2" HorizontalAlignment="Left" Height="136" Margin="34,29,0,0" VerticalAlignment="Top" Width="500"
ItemsSource="{Binding}" CanUserAddRows="False" CanUserDeleteRows="False" CanUserResizeRows="False" AutoGenerateColumns="False" CanUserReorderColumns="False" CanUserResizeColumns="False" CanUserSortColumns="True" RenderTransformOrigin="0.529,0.412" AutomationProperties.IsColumnHeader="True">
<DataGrid.Columns>
<DataGridTextColumn Binding="{Binding AddID}" Header="AddID" Foreground="#FFBF0E0E"/>
<DataGridTextColumn Binding="{Binding FName}" Header="FName"/>
<DataGridTextColumn Binding="{Binding LName}" Header="LName"/>
<DataGridTextColumn Binding="{Binding Street}" Header="Street" Foreground="#FF18904F"/>
<DataGridTextColumn Binding="{Binding City}" Header="City"/>
<DataGridTextColumn Binding="{Binding State}" Header="State"/>
<DataGridTextColumn Binding="{Binding Zip}" Header="Zip"/>
</DataGrid.Columns>
</DataGrid>
<Button x:Name="btn2" Content="Button" HorizontalAlignment="Left" Margin="273,185,0,0" VerticalAlignment="Top" Width="75" Click="Btn2_Click" RenderTransformOrigin="-2.084,4.366"/>
</Grid>
</TabItem>
private void Btn2_Click(object sender, RoutedEventArgs e)
{
var DG2 = dg2.SelectedCells[0];
var cellInfor = dg2.SelectedCells[0];
dg2.CurrentCell = new DataGridCellInfo(dg2.Items[0], dg2.Columns[0]);
var DG22 = (cellInfor.Column.GetCellContent(cellInfor.Item) as TextBlock).Text;
MessageBox.Show(DG22);
int AddID = Convert.ToInt32(DG22);
私有无效Btn2_单击(对象发送者,路由目标e)
{
var DG2=DG2.所选单元格[0];
var cellInfor=dg2.选定的单元格[0];
dg2.CurrentCell=新的DataGridCellInfo(dg2.Items[0],dg2.Columns[0]);
var DG22=(cellInfor.Column.GetCellContent(cellInfor.Item)作为TextBlock);
MessageBox.Show(DG22);
int AddID=Convert.ToInt32(DG22);
在if语句中,Items和SelectedItems为红色未对齐。我找不到要使用的正确语句。编辑了我的上述答案。