【发布时间】：2017-01-23 02:53:49
【问题描述】：
如何使用 MVVM Wpf 从文本框中添加文本并将其添加到数据网格？
代码：
public class GtlS4Model : INotifyPropertyChanged
{
private Double sNo;
private Double deliveryNo;
private Double srNo;
private Double custPartNo;
private Double binS4Label;
private Double masterData;
public double SNo
{
get
{
return sNo;
}
set
{
sNo = value;
OnPropertyChanged( "SNo");
}
}
public double DeliveryNo
{
get
{
return deliveryNo;
}
set
{
deliveryNo = value;
OnPropertyChanged( "Delivery_No");
}
}
public double SrNo
{
get
{
return srNo;
}
set
{
srNo = value;
OnPropertyChanged( "SrNo");
}
}
public double CustPartNo
{
get
{
return custPartNo;
}
set
{
custPartNo = value;
OnPropertyChanged("CustPartNo");
}
}
public double BinS4Label
{
get
{
return binS4Label;
}
set
{
binS4Label = value;
OnPropertyChanged( "BinS4Label");
}
}
public double MasterData
{
get
{
return masterData;
}
set
{
masterData = value;
OnPropertyChanged("MasterData"); }
}
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged ( string propertyName )
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
}
现在查看模型：
public class GtlS4ViewModel
{
public ObservableCollection<GtlS4Model> gtls4Label { get; set; }
DataTable dt;
public void addTables()
{
dt.Columns.Add("S No.");
dt.Columns.Add("Delivery Note");
dt.Columns.Add("Sr No.");
dt.Columns.Add("Customer Part No.");
dt.Columns.Add("Bin S-4 Label");
dt.Columns.Add("Result");
var row1 = this.dt.NewRow();
var row2 = this.dt.NewRow();
var row3 = this.dt.NewRow();
var row4 = this.dt.NewRow();
var row5 = this.dt.NewRow();
var row6 = this.dt.NewRow();
row1["S No."] = 1;
row2["Delivery Note"] = 123456;
row3["Sr No."] = 1235143;
row4["Customer Part No."] = 56487564;
row5["Bin S4 Label"] = 5555656;
row6["Result"] = 6556456454564564;
this.dt.Rows.Add(row1);
this.dt.Rows.Add(row2);
this.dt.Rows.Add(row3);
this.dt.Rows.Add(row4);
this.dt.Rows.Add(row5);
this.dt.Rows.Add(row6);
}
public GtlS4ViewModel()
{
dt = new DataTable();
gtls4Label = new ObservableCollection<GtlS4Model>
{
new GtlS4Model {SNo = 1, DeliveryNo= 1325647, SrNo = 1515151, CustPartNo = 32156444, BinS4Label = 56456456, MasterData = 86864564564},
};
}
}
查看：
<Window x:Class="Gtl_S4_Validator.Views.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:Gtl_S4_Validator.Views"
xmlns:vm="clr-namespace:Gtl_S4_Validator.ViewModel"
mc:Ignorable="d"
Title="Window1" Height="720" Width="525">
<Window.Resources>
<vm:GtlS4ViewModel x:Key="ViewModelMain"/>
</Window.Resources>
<Grid Margin="-4,0,-4,-1">
<TextBox x:Name="txtSno" HorizontalAlignment="Left" Height="24" Margin="97,23,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="82" RenderTransformOrigin="0.666,-0.434"/>
<TextBox x:Name="txtDeliveryNo" HorizontalAlignment="Left" Height="21" Margin="97,61,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="82"/>
<Label x:Name="label" Content="S. No." HorizontalAlignment="Left" Margin="10,21,0,0" VerticalAlignment="Top"/>
<Label x:Name="label1" Content="Delivery Note" HorizontalAlignment="Left" Margin="10,59,0,0" VerticalAlignment="Top"/>
<Label x:Name="label2" Content="Sr. No." HorizontalAlignment="Left" Margin="10,100,0,0" VerticalAlignment="Top"/>
<Label x:Name="label3" Content="Customer Part no." HorizontalAlignment="Left" Margin="253,23,0,0" VerticalAlignment="Top"/>
<TextBox x:Name="txtSrNo" HorizontalAlignment="Left" Height="23" Margin="97,100,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="82"/>
<TextBox x:Name="txtCustPartNo" HorizontalAlignment="Left" Height="24" Margin="376,23,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="91"/>
<Label x:Name="label4" Content="Bin S-4 Label" HorizontalAlignment="Left" Margin="253,59,0,0" VerticalAlignment="Top"/>
<TextBox x:Name="txtBinS4Label" HorizontalAlignment="Left" Height="23" Margin="376,59,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="91"/>
<TextBox x:Name="txtMasterData" HorizontalAlignment="Left" Height="23" Margin="376,100,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="91" RenderTransformOrigin="0.337,0.445"/>
<Label x:Name="label5" Content="Master Data" HorizontalAlignment="Left" Margin="253,97,0,0" VerticalAlignment="Top"/>
<Button x:Name="btnValidate" Content="Validate" HorizontalAlignment="Left" Height="27" Margin="182,141,0,0" VerticalAlignment="Top" Width="131" Click="btnValidate_Click"/>
<DataGrid x:Name="GtlS4DataGrid" HorizontalAlignment="Left" Height="408" Margin="10,203,0,0" VerticalAlignment="Top" Width="505" ItemsSource="{Binding gtls4Label}" CanUserAddRows="True">
<DataGrid.Columns>
<DataGridTextColumn Header="S No" Binding="{Binding SNo}"/>
<DataGridTextColumn Header="Delivery Note" Binding="{Binding Delivery Note}" />
<DataGridTextColumn Header="Sr No" Binding="{Binding Sr No}" />
<DataGridTextColumn Header="Customer Part No." Binding="{Binding CustomerPartNo }" />
<DataGridTextColumn Header="Bin S4 Label" Binding="{Binding BinS4Label}" />
<DataGridTextColumn Header="Result" Binding="{Binding MasterData}" />
</DataGrid.Columns>
</DataGrid>
<Button x:Name="btnExport" Content="Export" HorizontalAlignment="Left" Margin="182,616,0,0" VerticalAlignment="Top" Width="75"/>
<Button x:Name="btnClear" Content="Clear" HorizontalAlignment="Left" Margin="283,616,0,0" VerticalAlignment="Top" Width="75"/>
</Grid>
</Window>
我不明白我怎么做错了，但它没有从按钮添加任何数据，而且我对这个环境完全陌生。
任何帮助将不胜感激。
【问题讨论】：
-
你能澄清一下你真正想要它做什么吗？网格中的每一列都有一个文本框。您是否希望文本框显示/更新当前选定行的相应列？您是否希望文本框向视图模型的 DataTable dt 添加一行？说到这，DataTable 对我来说看起来完全没有用。有什么意义？
-
我只想为输入到文本框中的数据添加一个新行并将其显示到网格上
-
是的，数据表完全不用