如何将整数变量放在文本框名称的一部分？ [英] How to put integer variable in part of textbox's name?

问题描述

大家好

我有一些TextBox和Lable。我想把整数变量放在TextBox名称的一部分。

例如：

Hi everyone
I have some TextBox and Lable. I want to put integer variable in part of TextBox''s name.
for example:

private void btnSabtClerkEvaluation_Click(object sender, EventArgs e)
        {
            try
            {
                if (lbl1MadrakeTahsili1.Text.Trim() == string.Empty || lbl2Takhasos2.Text.Trim() == string.Empty || lbl3Khalaghiat3.Text.Trim() == string.Empty || lbl4Nazm4.Text.Trim() == string.Empty || lbl5Raftar5.Text.Trim() == string.Empty ||
                   lbl6Taamol6.Text.Trim() == string.Empty || lbl7Masouliatpaziri7.Text.Trim() == string.Empty || lbl8Arastegi8.Text.Trim() == string.Empty || lbl9MizaneKhata9.Text.Trim() == string.Empty || lbl10SakhtiKar10.Text.Trim() == string.Empty)
                {
                    MessageBox.Show("Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                else
                {
                    SqlCommand cmd = new SqlCommand("ClerkEvaluation_Insert", conn);
                    cmd.CommandType = CommandType.StoredProcedure;
                    for (int i = 0; i <= 10; i++)
                    {

                        cmd.Parameters.AddWithValue("@clrk_Name", txtNameClerkEvaluation.Text);
                        cmd.Parameters.AddWithValue("@clrk_Family", txtFamilyClerkEvaluation.Text);
                        cmd.Parameters.AddWithValue("@clrk_MelliCode", txtMelliCodeClerkEvaluation.Text);

                        cmd.Parameters.AddWithValue("@clrke_Percent", lbl[i].Text);// this name is lbl1. How to give number?
                        cmd.Parameters.AddWithValue("@clrke_Tozihat", txt[i].Text);// This name is lbl2
                        conn.Open();
                        cmd.ExecuteNonQuery();
                        conn.Close();
                    }
                }
            }
}

我想在表单上发送一些Contorols到sql和sql，根据这个号码做自己的订单。我确实想确定哪一个标签现在发送。我应该定义lbl [i]，因为使用''i''我可以发送所有Lable.Text或TextBox.Text顺序。我想说lbl [i]（= lbl1）.Text现在发送。但我已经尝试了

I want to send a number of Contorols on the form to sql and sql to do own order base on this number. I exactly want to determine when which one of lables are sending now. I should define lbl[i], because with ''i'' i can send all Lable.Text or TextBox.Text order. I want to say lbl[i] (=lbl1) .Text to send now.but i have tried

cmd.Parameters.AddWithValue("@clrke_Percent", lbl[i].Name.Substring(3) + " " + lbl[i].Text);
cmd.Parameters.AddWithValue("@clrke_Tozihat", txt[i].Name.Substring(3) + " " + txt[i].Text);

和

and

When i write this line, I get this error
"Error2The name 'lbl' does not exist in the current contextD:\Project\evaluation\WindowsFormsApplication1\WindowsFormsApplication1\Form1.cs976119WindowsFormsApplication1"
Thx for your help.

推荐答案

简单搜索显示， lbl 实际上从未定义过。所以，你认为它会被一个奇迹定义吗？确保你定义它。

-SA

As simple search shows, lbl is really never defined. So, do you think that it will be defined by a miracle? Make sure you define it.

—SA

尝试如下

try like follows

cmd.Parameters.AddWithValue("@clrke_Percent", this.Controls.Find(string.Format("lbl{0}", i), false).First().Text);
         cmd.Parameters.AddWithValue("@clrke_Percent", this.Controls.Find(string.Format("txt{0}", i), false).First().Text);

首先看到的定义Controls.Find

first see the definition for Controls.Find

public Control[] Find(
	string key,
	bool searchAllChildren
)

http://msdn.microsoft.com/en-us/library/system.windows.forms.control .controlcollection.find（v = vs.100）.aspx [ ^ ]



假设i = 2

string.Format（lbl {0}，i）给出值= lbl2

this.Controls.Find 按给定的键搜索控件。



例如：

编译完成后

this.Controls.Find（string.Format（lbl {0}，i），false）.First（）。Text

就像

this.Controls.Find（lbl2，false）.First（）。Text

.First（）是一个选择第一个元素的LINQ。



忘了提到你可能必须包含命名空间

使用System.Linq ;

http://msdn.microsoft.com/en-us/library/system.windows.forms.control.controlcollection.find(v=vs.100).aspx[^]

suppose i=2
string.Format("lbl{0}", i) give the value =lbl2
this.Controls.Find search the controls by given key.

for ex:
after compiling the
this.Controls.Find(string.Format("lbl{0}", i), false).First().Text
it just like
this.Controls.Find("lbl2", false).First().Text
.First() is a LINQ to select the first element.

forget to mentioned you may have to include the namespace
using System.Linq;

你可以这样做波纹管。

You can do like the bellow.

List<TextBox> textBoxList = new List<TextBox>();
textBoxList.Add(txtName);
textBoxList.Add(txtPhone);

TextBox txtName=textBoxList[1];

这篇关于如何将整数变量放在文本框名称的一部分？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！